. An audio transmitter that connects to an external microphone to send audio signal to DJI Pocket 2 wirelessly freeing users from additional wiring. The DJI Wireless Microphone Windscreen covers the microphone to eliminate noise generated by wind. When used with the DJI Pocket 2 Do-It-All Handle the linking button can control the shutter. Top Features . Long battery life of upto six hoursPortableWireless sound transmission . Specification . Dimensions 50 x 28.6 x 22.8mmWeight 21.4gBattery Type LiPoBattery Capacity 320mAhPrinciple of Acoustics Pre-polarized pressure transducerAudio Pickup OmnidirectionalFrequency Range 50 Hz -20 kHzExternal Mic Input 20 Hz - 20 kHzMaximum SPL 116dBSPL (1kHz@1% THD)Analog Input 3.5mm inputAdapter 5V/2A 5V/1A 5V/0.5AOperating Temperature 0° to 40°C (3° to 104°F)Frequency 2.400-2.4835GHZPower 2.4GHz (;13dBm(FCC); (;10dBm(CE); (;12dBm(SRRC); (;10dBm(MIC)Charging Time 60 minutes. .