This is a bluetooth module for use with any microcontroller. It uses the UART protocol to make it easy to send and receive data wirelessly. The HC-06 module is a slave only device. This means that it can connect to most phones and computers with bluetooth but it cannot connect to other slave only devices such as keyboards and other HC-06 modules.
Specifications
Bluetooth protocol
V2.0 + EDR
Length x Width
35mm x 15mm
Operating Voltage
3.3Vb~b5V
Speed
3Mbps
Transmission Distance
10m