Peltor ProTac Shooter Ear Defenders are highly technical ear defenders, which intelligently attenuate loud signals while boosting quiet sounds so you can converse with your shooting companions while remaining comfortable & protected at all times. These weatherproof hearing protectors come with a wide range of features including five volume levels, a 3.5mm listen-only jack, large user-friendly buttons, and a dual shell design held by a comfortable stainless steel headband. Powered by 2 x AA batteries to give approx 100 hours of use, with an automatic power shut off mode after a period of inactivity. This Pro-Tac Shooter model has a fantastic signal-to-noise ratio (SNR) of 32dB with slightly larger cups. Five-level volume steps 3.5mm listen-only jack 2 x AA batteries for approx 100 hours use Size: One Size