SportEar M4 ear muffs are well made, with a nicely padded, fully adjustable headband, volume adjustment wheels on each ear cup that let you balance the amplification to adjust for differences in your hearing on right and left. The wheels are generously sized so they can be easily adjusted even with gloves on.
SportEar M4 Quad Electronic Shooting Ear Muffs Features and Benefits:
- NRR 25 noise protection.
- Digital compression amplifies low level sounds up to 6 times normal, while limiting dangerously loud sounds to 85 dB maximum; suitable for use in OSHA regulated workplaces.
- Aux input jack (patch cable not included) for connecting to smart phones, music players, and two way radios (Listen only.)
- Ergonomic folding design for easy storage.
- Nicely padded fully adjustable headband and padded ear cups to fit most adults comfortably and securely.
- Easy operating thumb-wheel volume adjustments on each ear cup let you compensate for hearing differences in each ear.
- Powered by 4 AAA batteries (Included.)