Hearing protection without compromise. DEFY is a tactical earmuff that defies every assumption shooters have about painful and restrictive hearing protection. This modern take on a traditional style earmuff features next-generation technology, providing environmental awareness and gunshot noise attenuation. Tactical Sound Control Technology enhances your hearing up to 8x while protecting you from high-impact noises in under 2 milliseconds. Lightweight Design at just 15.5 ounces with a vented headband and memory foam ear cushions. Rechargeable Battery provides up to 11 hrs of connection to any device. AAA Battery Compatible for up to 22 hrs of connection (not included). Automatic Power Off after 4 hours for battery conservation. SafeMax Technology limits volume output to 85 dB for all-day, damage-free listening. Bluetooth 4.2 connects, and dual-connects, devices up to 30 feet. IPX4 Durability for sweat and water resistance. 25 NRR tested and approved to ANSI s3.19-1974. Noise-Isolating Microphone for clear communication in loud environments. DEFY Bluetooth hearing protector Micro USB charging cable Quick Start Guide and Product Manual