Shop Latest Robotic Ai

Sponsored
About our ads
$199.99
Waveshare Jetbot Professional Version ROS AI Kit Compatible With The Nvjetbot Open-Source Project Program AI Robot Lidar Mapping Vision Processing
Amazon.com
Free shipping
$199.99
Waveshare Jetbot Professional Version ROS AI Kit Compatible With The Nvjetbot Open-Source Project Program AI Robot Lidar Mapping Vision Processing
Amazon.com
$4,400.00
Go2 Pro AI Quadruped Robot Dog | Robostore Controller Included
RoboStore
$4,400.00
Go2 Pro AI Quadruped Robot Dog | Robostore Controller Included
RoboStore
$53,900.00
Unitree G1 EDU Plus Robotic Humanoid | Robostore | Robots For Education
RoboStore
$53,900.00
Unitree G1 EDU Plus Robotic Humanoid | Robostore | Robots For Education
RoboStore
$669.99
Waveshare UGV Beast ROS 2 Open-Source Off-Road Tracked AI Robot, Dual Controllers, Computer Vision, All-Metal Body, Flexible And Expandable,
Amazon.com
Free shipping
$669.99
Waveshare UGV Beast ROS 2 Open-Source Off-Road Tracked AI Robot, Dual Controllers, Computer Vision, All-Metal Body, Flexible And Expandable,
Amazon.com
$21,900.00
Go2 EDU+ (W/ XT16 LIDAR) AI Quadruped Robot Dog | Robostore
RoboStore
$21,900.00
Go2 EDU+ (W/ XT16 LIDAR) AI Quadruped Robot Dog | Robostore
RoboStore
$285.99
Waveshare Jetracer Professional ROS AI Kit - Dual Controllers AI Robot, Lidar Mapping, Vision Processing, Accessories Only (Jetson Nano Dev Kit Not
Amazon.com
$285.99
Waveshare Jetracer Professional ROS AI Kit - Dual Controllers AI Robot, Lidar Mapping, Vision Processing, Accessories Only (Jetson Nano Dev Kit Not
Amazon.com
$1,939.99
ROS2 Robot Car With AI Vision Robotic Arm Support Python SLAM Mapping Navigation Autonomous Driving Smart Robot For Engineering Student And Adults,
Amazon.com
3
$1,939.99
ROS2 Robot Car With AI Vision Robotic Arm Support Python SLAM Mapping Navigation Autonomous Driving Smart Robot For Engineering Student And Adults,
Amazon.com
$976.00
Rux AI Desktop Robot,Voice Dialogue Remote Monitoring Artificial Intelligence Companion Robot
Alibaba B2B
Free shipping
$976.00
Rux AI Desktop Robot,Voice Dialogue Remote Monitoring Artificial Intelligence Companion Robot
Alibaba B2B
$65,900.00
Unitree G1 EDU Smart Robotic Humanoid | Robostore | Robots For Education
RoboStore
$65,900.00
Unitree G1 EDU Smart Robotic Humanoid | Robostore | Robots For Education
RoboStore
$55,125.00
Autonomous Navigation AI Robot China Humaniod Reception Robot Adaptive Artificial Intelligence Robot
Alibaba B2B
Free shipping
$55,125.00
Autonomous Navigation AI Robot China Humaniod Reception Robot Adaptive Artificial Intelligence Robot
Alibaba B2B
$989.99
HIWONDER Ainex ROS Education AI Vision Humanoid Robot Powered By Raspberry Pi 5 Biped Inverse Kinematics Algorithm Learning Teaching Kit Standard Kit
Amazon.com
2
Free shipping
$989.99
HIWONDER Ainex ROS Education AI Vision Humanoid Robot Powered By Raspberry Pi 5 Biped Inverse Kinematics Algorithm Learning Teaching Kit Standard Kit
Amazon.com
$119.99
Robotic Arm With Arduino 5DOF/Axis AI Smart Robot Arm Open Source STEM Educational Building Robotics & Engineering Kits, Science/Coding/Programming
Amazon.com
22
Free shipping
$119.99
Robotic Arm With Arduino 5DOF/Axis AI Smart Robot Arm Open Source STEM Educational Building Robotics & Engineering Kits, Science/Coding/Programming
Amazon.com
$12,000.00
Fully AI Technology Mall Hospital Autonomous Humanoid Speaking Artificial Intelligence Robot
Alibaba B2B
$12,000.00
Fully AI Technology Mall Hospital Autonomous Humanoid Speaking Artificial Intelligence Robot
Alibaba B2B
$14.35
High Quality Customizable Xiaozhi AI Robot Open Source Intelligent Voice Assistant With Voice Recognition Smart Robot
Alibaba B2B
Free shipping
$14.35
High Quality Customizable Xiaozhi AI Robot Open Source Intelligent Voice Assistant With Voice Recognition Smart Robot
Alibaba B2B
$674.00
Yahboom Raspberry Pi 5 Adults AI Smart Robot Dog Python Programmable 12DOF Bionic Mechanical Dog DOGZILLA Face Color Recognition Opencv (S2 Without Pi
Amazon.com
Free shipping
$674.00
Yahboom Raspberry Pi 5 Adults AI Smart Robot Dog Python Programmable 12DOF Bionic Mechanical Dog DOGZILLA Face Color Recognition Opencv (S2 Without Pi
Amazon.com
$43,900.00
Unitree G1 EDU Standard Robotic Humanoid | Robostore | Robots For Education
RoboStore
$43,900.00
Unitree G1 EDU Standard Robotic Humanoid | Robostore | Robots For Education
RoboStore
$8,000.00
AI Robot High Quality Intelligent Humanoid Robot Stabile AI Combination Service Robot
Alibaba B2B
Free shipping
$8,000.00
AI Robot High Quality Intelligent Humanoid Robot Stabile AI Combination Service Robot
Alibaba B2B
$29,800.00
Intelligent Intelligent Humanoid Robots AI Smart Robot Humanoid For Educational Sale
Alibaba B2B
Free shipping
$29,800.00
Intelligent Intelligent Humanoid Robots AI Smart Robot Humanoid For Educational Sale
Alibaba B2B
$9,000.00
Interactive AI Humanoid Robot Smart Hospitality Ai Hospitality Assistant Interaction Reception Commercial Welcome Robot
Alibaba B2B
Free shipping
$9,000.00
Interactive AI Humanoid Robot Smart Hospitality Ai Hospitality Assistant Interaction Reception Commercial Welcome Robot
Alibaba B2B
$189.00
LOOI Robot-Space Black - AI Desktop Robot Companion,Chatgpt Voice Interaction,Visual Understanding,Personality&Memory,10W Wireless Charging,Tech&
Amazon.com
120
Free shipping
$189.00
LOOI Robot-Space Black - AI Desktop Robot Companion,Chatgpt Voice Interaction,Visual Understanding,Personality&Memory,10W Wireless Charging,Tech&
Amazon.com
$379.99
Yahboom Raspberry Pi 5 AI Visual ROS2 Smart Robot Car Kit 2DOF Camera Autonomous Driving Lidar Stem Education Project For Teen Engineers Students (
Amazon.com
Free shipping
$379.99
Yahboom Raspberry Pi 5 AI Visual ROS2 Smart Robot Car Kit 2DOF Camera Autonomous Driving Lidar Stem Education Project For Teen Engineers Students (
Amazon.com
$39.99
AI Smart Robot Health Manager: Emotion Recognition, Personalized Interactive Smart Health Companion
Alibaba B2B
Free shipping
$39.99
AI Smart Robot Health Manager: Emotion Recognition, Personalized Interactive Smart Health Companion
Alibaba B2B
$7,000.00
Amy Plus AI Humanoid Smart Service Robot Programmable 21.5Inch Navigation Robot
Alibaba B2B
Free shipping
$7,000.00
Amy Plus AI Humanoid Smart Service Robot Programmable 21.5Inch Navigation Robot
Alibaba B2B
$1,450.00
Humanoid Robot Multilingual AI Smart Guide Robot With Facial Recognition Navigation Receptionist Robot
Alibaba B2B
Free shipping
$1,450.00
Humanoid Robot Multilingual AI Smart Guide Robot With Facial Recognition Navigation Receptionist Robot
Alibaba B2B
$14,400.00
AI Robot Humanoid Voice Control And Artificial Intelligence Robot Camarero Support
Alibaba B2B
Free shipping
$14,400.00
AI Robot Humanoid Voice Control And Artificial Intelligence Robot Camarero Support
Alibaba B2B
$16,000.00
Autonomous Navigation G1 AI Robot China Humaniod Reception Robot Adaptive Artificial Intelligence
Alibaba B2B
Free shipping
$16,000.00
Autonomous Navigation G1 AI Robot China Humaniod Reception Robot Adaptive Artificial Intelligence
Alibaba B2B
$13,500.00
Professional Customized Ai Powered Artificial Intelligence Camera Robot Humanoid For Sale
Alibaba B2B
Free shipping
$13,500.00
Professional Customized Ai Powered Artificial Intelligence Camera Robot Humanoid For Sale
Alibaba B2B
FIFA World Cup 2026 draw: LIVE watch party in San Francisco
4:29:35
YouTubeAssociated Press
FIFA World Cup 2026 draw: LIVE watch party in San Francisco
Live from outside the Kennedy Center and a watch party in San Francisco for Friday's World Cup draw. FIFA expanded the field from 32 teams to 48, and just 42 spots have been determined going into the convoluted ceremony in which balls representing nations are plucked from bowls and assigned to groups per rules that restrict who goes where ...
1.3M views14 hours ago
Shorts
This NEW Robotic AI BARBER actually WORKS?! #barber #roboticbarber #aibarber
0:11
941 views
This NEW Robotic AI BARBER actually WORKS?! #barber #roboticbarber
هل تعلم
Unleashing the Future: The Incredible Robot Helicopter Revolution #robot #innovation #expo2025
0:09
6.1K views
Unleashing the Future: The Incredible Robot Helicopter Revolution #robot
ps-robot_ai
AI Robot Fails
AI2027: Is this how AI might destroy humanity? - BBC World Service
8:09
AI2027: Is this how AI might destroy humanity? - BBC World Service
YouTubeBBC World Service
1.8M views4 months ago
9 AI Skills You MUST Have to Become Rich in 2026
19:23
9 AI Skills You MUST Have to Become Rich in 2026
YouTubeDan Martell
1.8M views7 months ago
Python Tutorial with Gen AI for 2025 | Python for Beginners | Python full course
11:52:26
Python Tutorial with Gen AI for 2025 | Python for Beginners | Python full course
YouTubeGreat Learning
389.1K viewsJul 28, 2024
Top videos
Robosen's Transformers Soundwave Robot - Official Trailer
4:29
Robosen's Transformers Soundwave Robot - Official Trailer
YouTubeIGN
240.6K views1 day ago
‘A disaster if it holds’: Enten on Trump’s new low in poll
8:53
‘A disaster if it holds’: Enten on Trump’s new low in poll
YouTubeCNN
594.6K views3 days ago
UFC 2026 Seasonal Press Conference
37:25
UFC 2026 Seasonal Press Conference
YouTubeUFC
68.9K views9 hours ago
AI Robot Movies
Top 5 Humanoid Robot Movies of Recent Years | Best AI Robot Movies | Artificial Intelligence Movies
4:43
Top 5 Humanoid Robot Movies of Recent Years | Best AI Robot Movies | Artificial Intelligence Movies
YouTubeFlicksMania
133.6K viewsFeb 28, 2023
Top 10 Artificial Intelligence Movies - YouTube
8:56
Top 10 Artificial Intelligence Movies - YouTube
YouTubecommuniTV
32.3K viewsApr 4, 2024
Top 10 Artificial Intelligence Movies You Must Watch Now
10:28
Top 10 Artificial Intelligence Movies You Must Watch Now
YouTubeTREND+
1.1K views11 months ago
Robosen's Transformers Soundwave Robot - Official Trailer
4:29
Robosen's Transformers Soundwave Robot - Official Trailer
240.6K views1 day ago
YouTubeIGN
‘A disaster if it holds’: Enten on Trump’s new low in poll
8:53
‘A disaster if it holds’: Enten on Trump’s new low in poll
594.6K views3 days ago
YouTubeCNN
UFC 2026 Seasonal Press Conference
37:25
UFC 2026 Seasonal Press Conference
68.9K views9 hours ago
YouTubeUFC
ABC World News Tonight with David Muir Full Broadcast - Dec. 5, 2025
20:26
ABC World News Tonight with David Muir Full Broadcast - Dec. 5, 2025
473.3K views7 hours ago
YouTubeABC News
UFC 323: Pre-Fight Press Conference
44:36
UFC 323: Pre-Fight Press Conference
232.9K views1 day ago
YouTubeUFC
Back with a BANG 👊 Witness Takeru’s explosive showdown with Denis Puric at ONE 173!
2:11
Back with a BANG 👊 Witness Takeru’s explosive showdown wit…
5.3M views3 days ago
YouTubeONE Championship
Our Unpopular President | Cabinet Meeting Nap Time | Hegseth Throws Admiral Bradley Under The Bus
11:45
Our Unpopular President | Cabinet Meeting Nap Time | Hegseth Thro…
2.4M views3 days ago
YouTubeThe Late Show with Stephen Colbert
3:37
Chance | Gurnam Bhullar | Pooja Rajput | New Punjabi Song 2025 | …
1.7M views3 days ago
YouTubeSpeed Records
1:00
This Alex Pereira knockout was insane 🔥 #ufcshorts
1.2M views2 days ago
YouTubeUFC
11:45
Lawrence: After report of Hegseth's 'kill everybody' order, Trump's firs…
1.1M views4 days ago
YouTubeMS NOW
0:58
Chaalbaaz Episode 57 | Teaser | Saniya Samshad | Zoha Tauqeer | …
1M views19 hours ago
YouTubeARY Digital HD
16:48
LAKERS at CELTICS | FULL GAME HIGHLIGHTS | December 5, 2025
8.3K views7 hours ago
YouTubeNBA
38:14
Chaalbaaz Episode 56 | 5 Dec 2025 | Saniya Samshad | Zoha Tauqeer | …
2.3M views19 hours ago
YouTubeARY Digital HD
0:30
Be Dune Teen | A Series That Feels Real & Relatable | Marathi ZEE5 Or…
965.1K views1 hour ago
YouTubeZEE5
7:54
Dana Perino: They did NOT want this story exposed
647.3K views2 days ago
YouTubeFox News
0:30
Be Dune Teen | A Series That Feels Real & Relatable | Marathi ZEE5 Or…
473.2K views1 hour ago
YouTubeZEE5
2:16
Replaced - Official Release Date Trailer
377.7K views1 day ago
YouTubeIGN
13:24
Harris Faulkner: Jeffries just gave Trump CREDIT
375.1K views1 day ago
YouTubeFox News
6:20
BREAKING: Jan 6 pipe bomb suspect arrested
342.5K views1 day ago
YouTubeFox News
13:14
The Clippers DID NOT handle Chris Paul 'WELL AT ALL!' - Brian Wind…
338.2K views2 days ago
YouTubeESPN
5:07
Angelica Panganiban expertly dodges question about Derek Ra…
291.9K views22 hours ago
YouTubeABS-CBN News
0:48
Be Dune Teen | Marathi ZEE5 Original Series | Kshitish D, Shiva…
230.1K views1 hour ago
YouTubeZEE5
15:15
TIMBERWOLVES at PELICANS | FULL GAME HIGHLIGHTS | Decem…
178.5K views3 days ago
YouTubeNBA
16:08
GRIZZLIES at SPURS | FULL GAME HIGHLIGHTS | December 2, 2025
173K views3 days ago
YouTubeNBA
6:42
'A flashing red siren’: Enten on affordability issues facing voters
157.4K views17 hours ago
YouTubeCNN
10:57
Update on Bagyong Wilma as of 11 AM (Dec. 6, 2025) | GMA Integrate…
139.4K views6 hours ago
YouTubeGMA Integrated News
2:53:45
UFC 323: Morning Weigh-In Show
94.2K views14 hours ago
YouTubeUFC
16:02
TRAIL BLAZERS at CAVALIERS | FULL GAME HIGHLIGHTS | Decem…
84.3K views2 days ago
YouTubeNBA
11:25
Tampa Bay Lightning vs. Detroit Red Wings | NHL Highlights | Nov…
17.4K views1 week ago
YouTubeNHL
See more videos
Static thumbnail place holder

Short videos

0:11
This NEW Robotic AI BARBER actually WORKS?…
941 views1 week ago
YouTubeهل تعلم
0:09
Unleashing the Future: The Incredible Robot Helicopte…
6.1K views3 weeks ago
YouTubeps-robot_ai
0:32
China’s New Humanoid Robot Walks Like a Real H…
3.7K views2 weeks ago
YouTubeSarkari Dimag
0:17
This AI Humanoid Robot Looks Fully Aware #IRC202…
27K views2 weeks ago
YouTubeAI Robot Lab
0:12
Buy This AI Robotic Armor to Become a Next-Gen Super…
46.7K views2 months ago
YouTubeAI Robot Lab
0:56
The Robotic Hand That Outperforms Humans
1.1K views2 months ago
YouTubeRonald van Loon
1:09
$152M AI Breakthrough: Can OPEN-SOURCE Robots Sol…
674 views2 months ago
YouTubeThe Robots Bulletin
0:11
This Robot Girl Surprised Everyone!
1.8K views2 months ago
YouTubeRoboMate AI
0:50
HONOR ROBOT PHONE is the FUTURE | HONOR Next …
959 views1 month ago
YouTubeRideNtecH
0:55
AI & Robotics Hype: Don't Believe These Headlines!
134 views1 month ago
YouTubePositify Daily
0:38
Humanoid Robot vs Your Skill: Who Wins #robotics #…
1.3K views3 weeks ago
YouTubeLetspeak AI
1:40
5 Robots That Will Change Your Life Forever 🚀 #shorts …
47.2K views1 month ago
YouTubeLAB 360
0:16
He Opened The Robot's Chest And THIS Happened!
2.8K views1 month ago
YouTubeRoboMate AI
0:22
Revolutionizing Robot Control: Enhancing Safety i…
1.3K views1 month ago
YouTubeTechNovaAI
0:08
Expo Highlights: Stunning AI Robot Girl Steals the Show!
3.4K views2 months ago
YouTubeNextGen-Androids
1:35
Free-roaming AI robotic Olaf from 'Frozen' coming to Dis…
5K views1 week ago
YouTubeABC7 News Bay Area
1:06
7 INSANE Humanoid Robot Reveals! Will NVIDIA’s AI R…
221 views1 month ago
YouTubeThe Robots Bulletin
0:09
Smart Robotic Chili Harvesting | Modern Farme…
39.6K views3 weeks ago
YouTubeAI farming 11
0:20
🌾 kubota ai tech bringing future to farmers! #kubota …
5 views2 weeks ago
YouTubeAI Farm Machines
0:13
Final Checking of AI Robots Before Release. #robot #ro…
24.3K views2 months ago
YouTubeK2 Robot
Static thumbnail place holder

Shop Latest Robotic Ai

Sponsored
About our ads
$199.99
Waveshare Jetbot Professional Version ROS AI Kit Compatible With The Nvjetbot Open-Source Project Program AI Robot Lidar Mapping Vision Processing
Amazon.com
Free shipping
$199.99
Waveshare Jetbot Professional Version ROS AI Kit Compatible With The Nvjetbot Open-Source Project Program AI Robot Lidar Mapping Vision Processing
Amazon.com
$4,400.00
Go2 Pro AI Quadruped Robot Dog | Robostore Controller Included
RoboStore
$4,400.00
Go2 Pro AI Quadruped Robot Dog | Robostore Controller Included
RoboStore
$53,900.00
Unitree G1 EDU Plus Robotic Humanoid | Robostore | Robots For Education
RoboStore
$53,900.00
Unitree G1 EDU Plus Robotic Humanoid | Robostore | Robots For Education
RoboStore
$669.99
Waveshare UGV Beast ROS 2 Open-Source Off-Road Tracked AI Robot, Dual Controllers, Computer Vision, All-Metal Body, Flexible And Expandable,
Amazon.com
Free shipping
$669.99
Waveshare UGV Beast ROS 2 Open-Source Off-Road Tracked AI Robot, Dual Controllers, Computer Vision, All-Metal Body, Flexible And Expandable,
Amazon.com
$21,900.00
Go2 EDU+ (W/ XT16 LIDAR) AI Quadruped Robot Dog | Robostore
RoboStore
$21,900.00
Go2 EDU+ (W/ XT16 LIDAR) AI Quadruped Robot Dog | Robostore
RoboStore
$285.99
Waveshare Jetracer Professional ROS AI Kit - Dual Controllers AI Robot, Lidar Mapping, Vision Processing, Accessories Only (Jetson Nano Dev Kit Not
Amazon.com
$285.99
Waveshare Jetracer Professional ROS AI Kit - Dual Controllers AI Robot, Lidar Mapping, Vision Processing, Accessories Only (Jetson Nano Dev Kit Not
Amazon.com
$1,939.99
ROS2 Robot Car With AI Vision Robotic Arm Support Python SLAM Mapping Navigation Autonomous Driving Smart Robot For Engineering Student And Adults,
Amazon.com
3
$1,939.99
ROS2 Robot Car With AI Vision Robotic Arm Support Python SLAM Mapping Navigation Autonomous Driving Smart Robot For Engineering Student And Adults,
Amazon.com
$976.00
Rux AI Desktop Robot,Voice Dialogue Remote Monitoring Artificial Intelligence Companion Robot
Alibaba B2B
Free shipping
$976.00
Rux AI Desktop Robot,Voice Dialogue Remote Monitoring Artificial Intelligence Companion Robot
Alibaba B2B
$65,900.00
Unitree G1 EDU Smart Robotic Humanoid | Robostore | Robots For Education
RoboStore
$65,900.00
Unitree G1 EDU Smart Robotic Humanoid | Robostore | Robots For Education
RoboStore
$55,125.00
Autonomous Navigation AI Robot China Humaniod Reception Robot Adaptive Artificial Intelligence Robot
Alibaba B2B
Free shipping
$55,125.00
Autonomous Navigation AI Robot China Humaniod Reception Robot Adaptive Artificial Intelligence Robot
Alibaba B2B
$989.99
HIWONDER Ainex ROS Education AI Vision Humanoid Robot Powered By Raspberry Pi 5 Biped Inverse Kinematics Algorithm Learning Teaching Kit Standard Kit
Amazon.com
2
Free shipping
$989.99
HIWONDER Ainex ROS Education AI Vision Humanoid Robot Powered By Raspberry Pi 5 Biped Inverse Kinematics Algorithm Learning Teaching Kit Standard Kit
Amazon.com
$119.99
Robotic Arm With Arduino 5DOF/Axis AI Smart Robot Arm Open Source STEM Educational Building Robotics & Engineering Kits, Science/Coding/Programming
Amazon.com
22
Free shipping
$119.99
Robotic Arm With Arduino 5DOF/Axis AI Smart Robot Arm Open Source STEM Educational Building Robotics & Engineering Kits, Science/Coding/Programming
Amazon.com
$12,000.00
Fully AI Technology Mall Hospital Autonomous Humanoid Speaking Artificial Intelligence Robot
Alibaba B2B
$12,000.00
Fully AI Technology Mall Hospital Autonomous Humanoid Speaking Artificial Intelligence Robot
Alibaba B2B
$14.35
High Quality Customizable Xiaozhi AI Robot Open Source Intelligent Voice Assistant With Voice Recognition Smart Robot
Alibaba B2B
Free shipping
$14.35
High Quality Customizable Xiaozhi AI Robot Open Source Intelligent Voice Assistant With Voice Recognition Smart Robot
Alibaba B2B
$674.00
Yahboom Raspberry Pi 5 Adults AI Smart Robot Dog Python Programmable 12DOF Bionic Mechanical Dog DOGZILLA Face Color Recognition Opencv (S2 Without Pi
Amazon.com
Free shipping
$674.00
Yahboom Raspberry Pi 5 Adults AI Smart Robot Dog Python Programmable 12DOF Bionic Mechanical Dog DOGZILLA Face Color Recognition Opencv (S2 Without Pi
Amazon.com
$43,900.00
Unitree G1 EDU Standard Robotic Humanoid | Robostore | Robots For Education
RoboStore
$43,900.00
Unitree G1 EDU Standard Robotic Humanoid | Robostore | Robots For Education
RoboStore
$8,000.00
AI Robot High Quality Intelligent Humanoid Robot Stabile AI Combination Service Robot
Alibaba B2B
Free shipping
$8,000.00
AI Robot High Quality Intelligent Humanoid Robot Stabile AI Combination Service Robot
Alibaba B2B
$29,800.00
Intelligent Intelligent Humanoid Robots AI Smart Robot Humanoid For Educational Sale
Alibaba B2B
Free shipping
$29,800.00
Intelligent Intelligent Humanoid Robots AI Smart Robot Humanoid For Educational Sale
Alibaba B2B