40982 Champion: The meticulously designed Champion Vanquish Electronic Hearing Protection serves as a perfect fit for shooting sports. Each muff is acoustically modeled based on gunshot sounds to offer a perfect blend of daylong comfort and noise reduction. The earmuffs boast of Safe Level Sound Compression Technology that refreshes in less than 1ms and prominently features active noise cancellation. With two Full Dynamic Range HD speakers embedded, it ensures crystal clear hearing. The omnidirectional microphones capture every sound in your vicinity, resulting in natural audio and minimizing wind noises. The device is Bluetooth-enabled, letting you make and receive phone calls. It comes with a 12-hour Runtime Lithium Ion Rechargeable Batteries (included) and has an automatic shut-off feature post three hours.