3M WorkTunes Connect, AM/FM Hearing Protector, Bluetooth Technology

Noise Reduction Rating (NRR) 24 dB BLUETOOTH WIRELESS TECHNOLOGY lets you seamlessly stream entertainment from your mobile phone and any other Bluetooth enabled device INTEGRATED MICROPHONE lets you make and take phone calls without removing the ear protection EXCELLENT AM/FM RADIO performance with clear sound and bass boost option for great listening AUDIO ASSIST TECHNOLOGY provides operational and set-up guidance–without having to take off the headset AUDIO ASSIST TECHNOLOGY helps you program up to 50 AM/FM radio stations and lets you know when your battery is running low EASY-TO-USE CONTROLS are conveniently within reach on your headset Volume temporarily mutes when phone calls and messages are received Standard 3.5mm audio input jack lets you connect your devices Makes an excellent gift for the yard or woodworking enthusiast POWERED BY 2 AA BATTTERIES (Not Included) or Optional Li-Ion rechargeable battery (Alpha 1100 sold separately) CAUTION: 3M strongly recommends fit testing of hearing protectors.

Research suggests that many users will receive less noise reduction than indicated by the NRR due to variation in hearing protector fit, fitting skill and motivation of the user. If the NRR is used, 3M recommends that it be reduced by 50% or in accordance with applicable regulations