- Advance digital circuit - Wind Noise Reduction - Bluetooth enabled - 4 Hour Auto Shut Off - Cool mesh headband - Ultra low profile design - Comfort gel earpads - Rubberized coating - Active dynamic sound suppression - Compact folding design - Hi Gain omni directional mics - Comfort headband w/metal wire frame - Clear digital sound - Sound dampening composite housing - Lightening fast reaction time - NRR 21