Dji Mic Mini (1 Tx + 1 Rx) Compact Wireless Microphone System (Black)

Color: black polar pattern: omnidirectional frequency response: 20 hz - 20 khz (low cut off), 100 hz - 20 khz (low cut on) max sound pressure level (spl): 120 db spl equivalent noise: 24 dba max transmission distance: 400 m wireless mode: gfsk 2mbps equivalent isotropic radiated power (eirp): <20 dbm wireless mode operating frequency: 2.400 - 2.4835 ghz bluetooth protocol: bluetooth v5.3 bluetooth operating frequency: 2.400 - 2.4835 ghz bluetooth transmitter power (eirp): <20 dbm battery type: li-ion battery capacity: 114 mah (tx), 170 mah (rx) battery energy: 0.44 wh (tx), 0.66 wh (rx) battery voltage: 3.87 v charging specification: max 5 v charging time: 1 hour and 30 mins (tx), 1 hour and 40 mins (rx) operating time: 11.5 hours (tx), 10.5 hours (rx)