Features: Slim low profile design Digital audio circuit Rechargeable Low noise/Frequency tuned for natural sound clarity Auto shut off Digital soft touch silent button operation 4 Frequency modes: Universal, Clear Voice, High Frequency Boost, Power Boost specifications: 2000 MAH (200 HOURS BATTERY LIFE) IP54 RATED USB-C CHARGING PORT RUBBER TACTI-GRIP HEADBAND COOLING GEL EARPADS (AVAILABLE ON MOST MODELS) FULL DYNAMIC RANGE HD SPEAKERS FOR CLEAR BALANCED SOUND SOUND ACTIVATED COMPRESSION SOUND DAMPENING COMPOSITE HOUSING 3.5MM AUDIO JACK USB-C CHARGING CABLE INCLUDED RUBBER SPRAY 20-23 NRR (TARGET )