Pro Ears - Pro Tac Slim Gold - Military Grade Hearing Protection and Amplification - NRR 28 - Ear Muffs -  Lithium 123a Batteries - Black Made of highest quality material Manufacturer: Pro Ears Pro Ears Pro TAC SC ear muffs black gs-pts-l-b Weighs only 11.1 ounces. Fast attack time of 1.5 milliseconds. Includes batteries. 3.5mm input jacks for i-pod and MP3 players. Battery life is 250 hours. Five year Warranty Made in the USA