COMPATIBLE 2 TX + 1 RX + Charging Case For DJI Mic Mini 1. Small and light, no sense of wearing 2. High-quality audio, stable transmission 3. Charging box has a long battery life of 48 hours 4. Direct connection to DJI OsmoAudio products, original sound quality 5. Active noise reduction, two adjustable levels 6. Automatic limiter, anti-explosive sound Technical parameters: --DJI Mic Mini transmitter 1. Dimensions: 26.55 mm long, 26.06 mm wide, 15.96 mm high 2. Weight: about 10 grams (without magnetic sheet) 3. Wireless mode: GFSK 2Mbps 4. Equivalent isotropic radiated power (EIRP): less than 20 dBm 5. Wireless mode operating frequency: 2.4000 GHz to 2.4835 GHz 6. Bluetooth protocol: Bluetooth 5.3 7. Bluetooth operating frequency: 2.4000 GHz to 2.4835 GHz 8. Bluetooth transmission power (EIRP): less than 20 dBm 9. Battery type: Li-ion 10. Battery capacity: 114 mAh 11. Battery energy: 0.44 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: about 90 minutes 17. Working time: about 11.5 hours (using DJI Mic Mini (one transmit and one receive), without noise reduction function, in a non-interference environment, close-range sound reception, transmitter and receiver connected, and receiver connected to the camera with a 3.5 mm cable.) --DJI Mic Mini receiver 1. Size length 46.50 mm, width 29.61 mm, height 19.32 mm 2. Weight: about 17.8 grams (including interface cover) 3. Wireless mode: GFSK 2Mbps 4. Equivalent isotropic radiated power (EIRP): less than 20 dBm 5. Operating frequency: 2.4000 GHz to 2.4835 GHz 6. Bluetooth protocol: Bluetooth 5.3 7. Bluetooth transmission power (EIRP): less than 20 dBm 8. Bluetooth operating frequency: 2.4000 GHz to 2.4835 GHz 9. Battery type: Li-ion 10. Battery capacity: 170 mAh 11. Battery energy: 0.66 Wh 12. Battery voltage: 3.87 V 13. Charging specifications: maximum 5 V 14. Charging environment temperature: 5- 45 degrees Celsius 15. Operating environment temperature: -10- 45 degrees Celsius 16. Charging time: about 100 minutes 17. Working time: about 10.5 hours (measured when using DJI Mic Mini (one transmitter and one receiver), noise reduction function is not turned on, receiving sound at close range in an interference-free environment, with the transmitter and receiver connected, and the receiver connected to the camera with a 3.5mm cable). ） DJI Mic Mini charging case 1. Dimensions: 96.10 mm long, 41.00 mm wide, 59.35 mm high 2. Weight: about 139 g (charging case only) 3. Battery type: Li-ion 4. Battery capacity: 1950 mAh 5. Battery energy: 7.55 Wh 6. Battery voltage: 3.87 V 7. Charging specifications: 5 V maximum, 1.5 A to 2 A 8. Charging ambient temperature: 5- 40 degrees Celsius 9. Operating ambient temperature: 5-45 degrees Celsius 10. Charging time: about 2 hours 11. Number of times the charging case can charge the transmitter and receiver: 2 transmitters and 1 receiver can be fully charged about 3.6 times with a fully charged charging case