3M PELTOR Optime 95 H6B Earmuffs NRR 21 Behind the Head H6B 10 Year Battery Overview 1017804 11 10 Year Battery Overview so the Buy button takes you to the current Amazon offer for live pricing and availability Multi task industrial — behind the head for workers transitioning between hard hat and helmet areas — H6B for industrial workers who move between general plant areas (hard hat) and specialized work areas (welding grinding) with the same BTH earmuffs compatible throughout Single earmuff model compatibility across task configurations simplifies PPE program administration — programs can specify one BTH earmuff model for all workers in multi task environments rather than managing separate cap mount and OTH models for different configurations