... full audio indication Perfect for truckers, restaurants, and on-the-go business functions Specifications: Working range: up to 10m ... with DSP3). Support A2DP,AVRCP,headset,handfree profile 5). Redial the last call ,Reject call.Volume adjustable. 6). Faster connecting,clear ... 10). Faster connecting, clear sound, anti-interference 11). Over-the-head Design Specification: 1) BT protocol: version 2.1+EDR2 ...