COMPATIBLE 2 TX + 1 RX + Charging Case For DJI Mic 2 1. One-piece storage, ready to use as soon as the lid is opened 2. 18 hours of battery life in the charging box 3. Clear sound reception, pleasant sound 4. 14 hours of recording storage & 32-bit floating point internal recording 5. Intelligent noise reduction, pure human voice 6. 250 meters of stable wireless transmission 7. Efficient collaboration, compatible with multiple devices 8. Supports magnetic suction, quick hiding Technical parameters: --DJI Mic 2 transmitter 1. Dimensions: 46.06 mm long, 30.96 mm wide, 21.83 mm high 2. Weight: 28 grams 3. Wireless mode: GFSK 1Mbps and 2Mbps 4. Equivalent isotropic radiated power (EIRP): less than 20 dBm 5. Wireless mode operating frequency: 2.400 GHz to 2.4835 GHz 6. Bluetooth protocol: BREDR 7. Bluetooth operating frequency: 2.400 GHz to 2.4835 GHz 8. Bluetooth transmission power (EIRP): less than 20 dBm 9. Battery type: Li-ion 10. Battery capacity: 360 mAh 11. Battery energy: 1.39 Wh 12. Battery voltage: 3.87 V 13. Charging specification: maximum 5 V 14. Charging environment temperature: 5- 45 degrees Celsius 15. Working environment temperature: -10- 45 degrees Celsius 16. Charging time: 70 minutes 17. Working time: 6 hours (measured when both transmitters are connected to the receiver, the transmitter is not recording backup, and the receiver is connected to the camera with a 3.5 mm cable.) --DJI Mic 2 receiver: 1. Dimensions: 54.20 mm long, 28.36 mm wide mm, height 22.49 mm 2. Weight: 28 g 3. Wireless mode: GFSK 1Mbps and 2Mbps 4. Equivalent isotropic radiated power (EIRP): less than 20 dBm 5. Operating frequency: 2.400 GHz to 2.4835 GHz 6. Battery type: Li-ion 7. Battery capacity: 360 mAh 8. Battery energy: 1.39 Wh 9. Battery voltage: 3.87 V 10. Charging specification: maximum 5 V 11. Charging environment temperature: 5- 45 degrees Celsius 12. Operating environment temperature: -10- 45 deg