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90m or 8hrs
- AAA Battery Music Playback / Talk Time : 46 hours ***
3M recommends replacing ear muff cushions and foam inserts every six months or whenever they become damaged
which makes it easier to put them in and take them out
ISOtunes FREE AWARE True Wireless Bluetooth Ear Plugs (NRR 25) Macks 90m or 8hrsCommunicate Clearly. Work Freely. Completely cord free, these Bluetooth earplugs are our most versatile and innovative to date. With level dependent Aware Technology, you can communicate with colleagues and listen for warning signals all while enjoying nonstop certified protection. ISOtunes FREE Aware gives you the freedom you want and the protection you need. Aware Technology offers complete situational awareness and protection from harmful noises.