The size is relatively small, it comes with abundant resources.It supports multiple programming languages such as, MakeCode/JavaScript/Python.It can transmit data through its built-in Bluetooth/wireless function.Compared with other controllers, Micro:bit programming operation steps are simpler, which is suitable for beginners and young children.Users can build robot cars or learning kits based on it.Microprocessor: 32-bit ARM Cortex M0 processor5x 5LED Matrix with 25LED red with two programmable buttonsDigital card 3-axis motion sensor and built-in magnetometer and 3D compass accelerometerAbility to interfaces Bluetooth-Micro technology controller to a computer such as a USB driveWe have detailed tutorial( included introduction, wiring diagram, test code, driver installation, Example Projects...... Step by step to explain how to use on our wiki page.Colour:blackMaterial:abs+metalSize:25 x 15 x 8cmPackage Contents:1 x micro:bitV2.2 motherboard1 x Alligator clip expansion board1 x Ultrasonic module1 x Dot matrix module4 x Key module1 x joystick module1 x potentiometer module1 x Motor drive module1 x Photosensitive module1 x Sound module1 x Color recognition module1 x RGB light module1 x Hall module1 x Vibration module1 x Infrared module1 x Servo15 x Alligator clip1 x micro-usb data cable with flat cable1 x Small fan1 x Motor battery box1 x Building block bagNote: battery not includedOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.