Wireless microphone-dynamics MDRLN6551 is designed for use with mobile radios of DM4000E series. Physical characteristics: Connector: 3.5 jack, Emergency call button, Removable battery with a turn clip. Operational characteristics: Range: Max. 100 m from mobile radio, Average battery operation life: for operating mode 5/5/90 – 28 h / for operating mode 5/35/60 – 13 h, Volume control: Available
