Impact Sport Features Impact Sport Bluetooth Earmuffs provide passive protection of 21 dB. When Bluetooth and listening circuits are engaged the device employs built in direction microphones that amplify ambient sounds to a safe 85 dB. 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. Impact Sport Specifications Manufacturer: Howard Leight Color: Pink Lithium Battery Application: Contained in Equipment Lithium Battery Type: Lithium Ion Watt Hour: 1.66 Protection Type: Electronic Ear Muff