LEFT & RIGHT DIGITAL EAR BUDS. SAC (SOUND ACTIVATED COMPRESSION) PROTECTS HEARING. OS-R3110 DIGITAL SOUND PROCESSING. ON/ OFF POWER SWITCH. INTEGRATED OMNI DIRECTIONAL MICROPHONES. FULL DYNAMIC RANGE SPEAKERS DELIVER CRISP CLEAR SOUND. INCLUDES BAFFLED SILICONE & FOAM EAR BUDS. SECURE-LOCKT- SIZING FINS (3 SIZES). 80 HOURS BATTERY LIFE (ESTIMATED). POWERED BY #10 BATTERIES (4 INCLUDED). MATTE BLACK WITH CARBON FIBER ACCENTS.