3. KEY FEATURES
A. 2.0 Stereo Sound
B. Left Button 1 – Outgoing Microphone Volume Up
C. Left Button 2 – Outgoing Microphone Volume Down
D. Right Button 1 – Volume Up
E. Right Button 2 – Volume Down
F. Left Button 3 – Microphone Mute
G. Left Button 4 – Power Button
