Features:

• micro:bit edge connector, directly pluggable
• Add a micro:bit if you don't have one!
• Buzzer to play music
• Onboard capacitive touch controller, 13x touch keys through the I2C interface
• 4x RGB LEDs, controlled by only one signal pin
• Breakout module control pins, micro:bit SPI pins, and GPIO pins
• Easy Expansion
• Code, Video and Instruction Wiki Examples
• micro:bit not included, for real

Specifications:

• Touch controller: TTP229
• LED: WS2812B
• LED color depth: 16777216 colors
• Operating voltage: 3.3V 
• Works with micro:bit v. 1 & 2

• VCC = Power (3.3V input)
• GND = Ground
• P0 = Buzzer control pin, related to mcro:bit P0
• P1 = LED control pin, related to mcro:bit P1
• SCL = Touch keys control pin, I2C clock
• SDA = Touch keys control pin, I2C data