- 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