The Walker's Game Ultra Ear Behind the Ear Electronic Ear Plugs are designed to amplify your hearing on your next trip to the woods. The Ultra Ears BTE's are lightweight and compact, so you will forget you have them on. The units feature a mild compression circuit to protect your ears from muzzle blast, and are designed to be used as hearing protection with a 22 db NRR. The Ultra Ear BTE's come in a black finish, and feature an easy to use ON/OFF switch. Featuresa Rechargeablea 48 Hours battery life on a single chargea Lightweight, compact behind-the-ear design can be used in either eara On/Off Switcha Noise Reduction Rating 22dBa dB Limiting @ 105dBa Can be used in either earIncludes: 2 units, 3 sizes of foam ear tips, brush and wax pick, screwdriver, and usb charger