Howard Leight SYNC Wireless Earmuff With Bluetooth Noise Reduction

HLP SYNC Wireless Earmuff With Bluetooth Noise Reduction Rating 25 SYNC Wireless Earmuff With Bluetooth Premium headband features rugged steel construction; headband and earcups are padded for long-wearing comfort; 16 plus hour rechargeable battery. Bluetooth 4.1 connectivity. Boom microphone provides Crystal clear communication in noisy environments and rotates out of the way when not in use. Volume management technology limits output volume from portable audio devices to 82 dB. Air flow control technology provides optimal noise reduction across all frequencies (NRR 25). Features includes earmuff USB charger with wall adapter 3.5 mm aux cable user manual 1 Lithium ion battery.