Black Electronic Ear Muff 30NRR Safety Shooting Hearing Protection MP3 3.5mm New. Black Electronic Ear Muff 30NRR. Is designed for those looking for maximum hearing protection. When the electronic ear protection is switched on, it employs built-in directional microphones that amplify range commands and other ambient sounds to a safe 82 dB, providing more natural listening and enhanced communication. As an added safety feature, the earmuff also actively listens and automatically shuts off amplification when loud impulsive reach 82 dB. A padded headband features telescopic height adjustment for a comfortable, customized fit. Rubberized pressure points prevent scratching. An external audio jack lets you connect the earmuff to an MP3 player, scanner or other audio source. The automatic shut-off function after 4 hours helps extend battery life. Black Electronic Ear Muff 30NRR F. Built-in directional microphones amplify range commands and other ambient sounds to a safe 82 dB, providing more natural listening and enhanced communication. Actively listens and automatically shuts off amplification when ambient sound reaches 82 dB; passively blocks out noise at 30dB. Rubberized pressure points prevent scratching; padded adjustable headband provides a secure and comfortable fit. Includes 2 AAA batteries and a 3.5mm connection cord for MP3 players and scanners; automatic shut-off feature after 4 hours increases battery life. 2.5 x 2.5 x 2.5 inches. Please NOTE that PILLOWS, PILLOW CASES, UNDERLAYS, BED TOPPERS, MATTRESS AND PILLOW PROTECTORS are NON-REFUNDABLE unless faulty. If an item is defective, damaged, broken or incorrect, kindly SEND US A MESSAGE FIRST so we can make it right for you. IF the product arrives damaged or incorrect, please SEND A PHOTO OF THE RECEIVED ITEM to verify. We require photos for DAMAGED / INCORRECT ITEMS. Kindly send us first a message if you receive a damaged item and wants a replacement. Black Electronic Ear Muff 30NRR is BRAND NEW. All efforts have been made to reproduce accurate colors, however variations in color may occur due to different computer monitor types and photography. We promise we can make you happy if you give us a fair chance. Please note: Since computer monitors vary in color, the actual color of the item may differ from what’s shown on your computer screen. Thank you for viewing this item. Please feel free to send us a message if you have any questions that are not answered in the description regarding this.