Kindly Reminder: This bluetooth module can only support Android mobile device.     Used to communicating between the VESC and VESC Tool (mobile) over BLE. Note that the UART port on the VESC must be enabled with a baud rate of 115200 for this to work. The UART port on VESC can work only under 115200 baud     Operating voltage: 2.0V ~ 12V Onboard Chip: NRF51822      Actual use distance: The distance to communicate with VESC is about 15 meters      Type: for V6 / for V4     Frequency range: 2.4GHz      2.4 GHz multiprotololl RF receiver      ARM Cortex-M0 32 bit processor      256kB flash & 16kB RAM      PCB size:27mm x 13mm     2.0mm seven-pin four-wire connector length:90mm     Antenna length:145mm     Material: plastic     colour: black          Package Contents:     1 x bluetooth module          Only 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.