DJI Mic (2TX+1RX+Charging Case) Microphone 250m.

Range: Up to 250 meters (820 ft) line-of-sight transmission.Battery Life: Up to 15 hours total with the charging case.Compatibility: Works with cameras, smartphones (iOS/Android), and computers via USB-C, Lightning, and 3.5mm TRS connections.Recording: Built-in dual-channel recording and onboard storage capabilities.