The function list: Frequency: 2.4000-2.4835ghz Modulation: fhss/gfsk Transmission rate: 721kbps Support mode: hands-free/headset/a2dp Receiver sensitivity: -80dbm Rf output power: 4dbm Volume: 1~9 Frequency response: 150-20khz (audio) S/n ratio: 65db Impedance: 4-8 ohms Power output: 4*1w Power supply: 5v Dimensions(mm): w192*d48*h112 Remark: 1. If use audio line, please don't open the bluetooth. 2. When use speaker for calling, please adjust volume down to suitable small sound.
