Specifications:BEHIND THE NECK DESIGNDIGITAL AUDIO CIRCUITRECHARGEABLELOW NOISE/FREQUENCY TUNED FOR NATURAL SOUND CLARITYAUTO SHUT OFFDIGITAL SOFT TOUCH SILENT BUTTON OPERATION2000 MAH (200 HOURS BATTERY LIFE)IP54 RATEDUSB-C CHARGING PORTSECURE STRAP HEADBANDCOOLING GEL EARPADS (AVAILABLE ON MOST MODELS)4 FREQUENCY MODES: UNIVERSAL, CLEAR VOICE, HIGH FREQUENCY BOOST, POWER BOOSTFULL DYNAMIC RANGE HD SPEAKERS FOR CLEAR BALANCED SOUNDSOUND ACTIVATED COMPRESSIONSOUND DAMPENING COMPOSITE HOUSING3.5MM AUDIO JACKUSB-C CHARGING CABLE INCLUDEDRUBBER SPRAY20-23 NRR (TARGET )