Features:Rechargeable electronic earplugs help reduce loud noise while amplifying low-level soundsIntuitive one-button operation turns unit on and off and selects high or normal volume settingLithium-Ion battery provides up to 16 hours of continuous operation between chargesPortable charging case powered by 3 AA alkaline batteries or USB (Micro B) portChoice of replaceable communications eartips designed to fit most ear canal sizes: UltraFit™ Communication Tip (23dB), Triple C Communication Tip (27dB), and Skull Screw Communication Tip (30dB)Tactical earplugs and portable charging station (with cover and USB ports closed) are IP67 compliant and water resistant (immersion of up to 1 meter for 30 minutes)Innovative microphone port design helps protect eartips against water ingressPortable charging station helps protect earplugs in wet and austere environmentsCompatible with most headborne Personal Protective Equipment such as helmets, hardhats, eyewear and faceshieldsOptional earplug cord can be attached to earplug for additional securityThe 3M™ PELTOR™ Tactical Earplug helps protect your hearing and helps improve auditory environmental awareness and communications in challenging environments where intermittent loud and impulse noise may be present. Utilizing state-of-the-art, sound level-dependent hearing protection technology, the TEP-100 is a compact, lightweight, and rechargeable electronic earplug.The 3M™ PELTOR™ Tactical Earplug helps protect your hearing, and can help improve situational awareness and communications in challenging environments. Integrated with state-of-the-art level dependent techNology, the TEP-100 helps provide hearing protection in Noise and situational awareness in quiet environments. Communication 3M™ PELTOR™ level dependent technology helps provide hearing protection in noise and improves communication in quiet. Protecting hearing and improving situational awareness can help increase safety and improve productivity. Compatibility 3M™ PELTOR™ Tactical Earplug is compatible with most headborne 3M™ Personal Protective Equipment (PPE) such as helmets, hardhats, and face shields. Comfort The small and lightweight design helps improve overall comfort and user experience.