Brookstone Wireless Fitness Earphones Dust-, sweat-, and waterproof Soft, adjustable ear hooks Great bass and acoustic performance Rechargeable battery lasts up to 4 hours Dust-, sweat- and waterproof to handle the toughest workouts (IPX54 rated) Soft, adjustable ear hooks ensure a comfortable fit and stay put during activity Neodynamic magnet drivers deliver great bass and acoustic performance Pairs with your device via Bluetooth technology for wireless freedom Inline mic lets you make or take phone calls Clip attaches to your shirt to keep the cable out of the way Rechargeable battery lasts up to 4 hours (music) / 4.5 hours (talk time) Includes Micro USB charging cable