Lithium Ion Battery [LINK, LINK Aware IT-34, DEFY] INSIDER-50 Tactical Sound Control™ amplifies environmental

Tactical Sound Control™ amplifies environmental sound for awareness and cuts harmful noise

workers can communicate face-to-face and hear other environmental sounds without the fear of hearing damage

Universal clip fits a wide range of safety helmets*

Rechargeable battery up to 11 hours or AAA compatible

Noise-Isolating Microphone for clear communication in loud environments

Lithium Ion Battery [LINK, LINK Aware IT-34, DEFY] INSIDER-50 Tactical Sound Control™ amplifies environmentalCompatible with LINK, LINK Aware [IT 34]*, and DEFY earmuffs. *IT 34 does not have any green on the headband, and does not have a boom mic port under the right ear cup.