On-board MEMS microphone, providing sound input for :bit, built-in LED indicator on the front, external circuit (power to ground) 33K:1K Built-in speaker to play sound In addition to outputting sound through PWM on the pin, :bit V2 also has an on-board electromagnetic speaker, which can output sound to complete more experiments The logo on the front of the capacitive touch sensor becomes a metal capacitive touch sensor, which can return digital signals to :bit V2 like a button up to 200MA current Built-in discrete voltage regulator chip, which can up to 200MA current for peripheral accessories, providing more powerful support for projects such as camel machine control Compared with the previous generation :bit v1.5, :bit V2has the same and powerful functions. On the basis of the same functions, it adds functions such as speakers and microphones, allowing children to use sound and touch in the classroom. with ease Product: : bit V2 Suitable for the crowd: students and enthusiasts above elementary school) Processor: 512kb flash 128K RAM Size: 43x52mm Programming environment: online programming + local programming tools Programming languages: makecode, Python, Scratch Onboard components: I/O signal port, Bluetooth, electronic compass, programmable buttons, LED dot screen, accelerometer, microphone, touch- LOGO buzzer Connecting external devices: alligator clips, expansion boards Wireless connection: 2.4GHz wireless network 4.0BLE Bluetooth Power supply: -usb 5v power supply, 3V power interface or battery box power supply Output current: 200 MA Colour:black Material:PCB Package Contents: 1 x :Bit V2 Development Board(random colors, ' accept the specified color) 1 x Data Cable(random colors, ' accept the specified color) 1 x Battery Box (Built-In 2 x AAABatteries) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.