The CLRACING Bluetooth adapter allows you to use the Speedybee app that's compatible with both Android and IOS to tune your flight controller.The module will get power once plugged to the FC USB- with compatible OTG Fc's Features2s-8s power input, at the same time, the Micro USB interface supplies power to the flight controller (A battery can simultaneously power the Bluetooth module and the flight controller)Support FC power the bluetooth module. (on supported OTG flight controllers like the CLRACING F7Support STM32/Cp210x USB Connector,compatible with most flight controllersUsing with SpeedyBee App, the most convenient Mobile Ground Station!IOS Device: Iphone 4s,iPad 3rd Gen and later iOS 10.0+Android 4.3+DevicesSpecifications:Output power: 0 dBmReceiver Sensitivity: -94dBmTransmission Rate: Bidirectional 2K/SBluetooth Protocol: Bluetooth Specification V4.0 BLETransmission Distance: 10mFrequency Range: 2400 MHZ-2483.5 MHZ (2.4G ISM Band)Baud Rate: 19200USB Seril Port Baud Rate: 115200Operating Voltage: 2-8S Lipo (6-30V)Minimum Operating Current When Connecting FC: 80,ADimensions: 42x20x5.6mmNet Weight: 3.5Gr.Includes:1 x CLRACING Bluetooth USB Adapter1 x XT60 Connector1 x Wire Set1 x Clear Heat shrink