Walkers Razor Slim Electronic Muff Black Noise Reduction Rating: 23 dB;Two high-gain omnidirectional microphones;Sound-activated compression with 0.02 second reaction time;Full-range high-definition speakers;Recessed independent volume controls;Sound-dampening composite housing;Soft and comfortable ear cups;Sturdy wire-frame headband;Audio input jack for external devices;Powered by two AAA batteries (included)table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 3700 Product Group Code: 3700B Inactive: No