Howard Leight Impact Sport Bluetooth Small Earmuff - 2nd Amendment Black Diamond Pattern Band 21dB NRR SPECIFICATIONS BRAND: HOWARD LEIGHT CA PROP 65: YES COLOR: MULTI EAR PROTECTION TYPE: ELECTRONIC NOISE REDUCTION: 21 DB PACKAGE QUANTITY: 1 PROTECTION TYPE: EAR MUFFS DESCRIPTION Impact Sport Bluetooth Earmuffs provide passive protection of 21dB. When Bluetooth and listening, circuits are engaged, the device employs built in direction microphones that amplify ambient sounds to a safe 85dB. This allows the ear to hear important commands on the range and crucial environment sounds when hunting. It also actively listens and employs faster Sound-Activated Compression at 0.5 millisecond reaction time stopping amplification when loud impulse sounds like firearms discharges exceed safe 85 dB level. The Bluetooth function keeps you always connected using your phone or other input devices. Impact Sport's sleek, extremely low-profile design with carefully engineered cutouts facilitate the shouldering of a rifle or shot gun while maintaining clearance from firearm stock. Features: 21 dB Noise Reduction Rating (NRR) Faster Sound Activated Compression: 0.5 Millisecond Reaction Time Bluetooth® Sync to wireless devices Easy to use Bluetooth® controls integrated into the headset Digital compression circuitry with 5X Sound Amplification Separate Volume Controls for Bluetooth® and external environment amplification 2-High Gain Omni Directional Microphones Features AIR FLOW CONTROL that allows for a slim low profile ear cup design ensuring firearm stock clearance Compact folding design for convenient storage Automatic shut off engages after 4-hours to conserve battery life Rechargeable Lithium-Ion Battery USBC Recharging Cable Adjustable headband now available in two different sizes for a more custom, secure fit