... ). Faster connecting,clear sound,anti-interference.7). Lightweight headset design.8). Listen to stereo music from PC.9). On ... wireless transmitter.10). Faster connecting, clear sound, anti-interference. Specification:1) BT protocol: version 2.1+EDR2) Frequency: 2. ... Faster connecting, clear sound, anti-interference 11). Over-the-head Design Specification: 1) BT protocol: version 2.1+EDR2) Frequency: 2. ...