Otis Technology EarShield Ranger Electronic Pro Earmuff 23dB Black. These electronic earmuffs offer protection against harmful noise coupled with an ultra-fast attack time for uninterrupted hearing of ambient noise like range commands. Lets talk fit. Slim low profile cups also feature a cutout for an improved cheek weld without sacrificing effectiveness. The adjustable headband ensures a proper fit and the soft band makes for a comfortable wear. The ear cups are composed of an ultra-comfortable gel and ensure a tight seal even with glasses. Need to replace the cups? The snap in design makes it a breeze. Lets talk protection. These earmuffs boast a Noise Reduction Rating (NRR) of 23dB. Plus the sound compression technology coupled with the omnidirectional microphones ensure maximum environmental sounds at a safe volume level. Boost ambient sound up to 5X. Additionally the 0.5 millisecond attack time is ultra-fast and offers uninterrupted hearing it eliminates sound clipping of ambient noise after a gunfire so you dont miss important range commands. Lets talk function. The compact folding earmuffs are easy to store at home or in your range bag. Powered by 2AAA batteries (not included) the 4 hour auto shut off feature prolongs battery life. The on/off switch controls volume and an LED light indicates unit is powered on. An auxiliary input jack and included cord for connecting to phone/devices. Specifications for Otis Technology Earshield Ranger Electronic Pro Earmuff: Manufacturer: Otis Technology Color: Black NRR: 23 dB Quantity: 1 Battery Type: AAA Features of Otis Technology Earshield Ranger Electronic Pro Earmuff Slim low profile muffs 23dB NRR Features sound activated compression & omnidirectional microphone technology for maximum environmental sounds at a safe volume level 5x amplification Ultra-fast attack time of 0.5 millisecond offers optimal noise blocking over 82dB while minimizing interruption of ambient hearing Adjustable headband Soft comfortable band for extended wear Ultra-comfortable gel ear cups ensure a tight seal even with glasses Easy replaceable ear cups with snap-in design Compact foldable design LED light power indicator Aux jack and cord included -preserve battery life with 4 hour auto shut off -powered by 2AAA batteries (not included) Package Contents: Otis Technology Earshield Ranger Electronic Pro Earmuff Otis Technology FG-ES23E-BK: EarShield Ranger Electronic Pro Earmuff 23dB Black