Features: 1. Support KittenBlock programming (based on Scratch3.0, can compile Arduino-and-Python code offline). 2. patrol car built-in PID algorithm, use the 5-way IR line inspection module 3. Onboard passive buzzer 4. Onboard 18650 battery charging circuit, two RGB full-color lights on the bottom 5. With patrol mode and obstacle avoidance mode function 6. Graphical programming, exercise logical thinking 7. Support Android- ios two systems, mobile programming, play more comfortable Specifications: - Product: Scratch programming mini patrol robot smart car - For the crowd: beginners - Product Size: about (L*W*H)11cm*10cm*3.5cm - Chassis diameter is about 10cm - Micro-controller Chip: Atemlmega328p - Power Supply: 3.7V 18650 Battery (Not Included) - System & Device Requirements: Appledevice: 1) IOS8.1 or above; iPhone5 or above. 2) iPad3/4; iPadAir 1/2; iPadMini 1/2/3/4. Android device: 1)Android2.3 or above. - PC: Windows/forMac. Download file about the product: **KittenBot APP Download: IOS App and Android APP **User Manual: http://learn.kittenbot.cc/en/latest/index.html Package Included: 1 x Scratch programming mini patrol robot smart car DIY kit ( without battery)