Walker’s Razor Tacti-Grip electronic muffs feature a high-performance silicone composite headband for a slip free and secure fit. These muffs use active dynamic sound suppression and omni-directional mics to block out the noise you don’t want and let in the sound you do want. A lightning fast reaction time and wind noise reduction prevent unwanted obtrusive noise while on the range or at the workplace. The inclusion of Bluetooth and a physical audio input jack, allows these electronic muffs to be connected to compatible devices wirelessly or wired, including phones and walkie talkies. Includes a battery saving auto shut off that powers down the muffs after 4 hours.