Ilive iahb48mbu bluetooth over-the-ear headphones with microphone (matte blue)
bluetooth(r) range: 33 ft., supports a2dp; auto pairing; rubberized coating for matte finish; drivers: 40 mm; frequency response: 20 hz to 20 khz; impedance: 32 ohms; sensitivity: 102 db at 1 khz spl; playback time at 50% power; on-ear controls--volume up, volume down, play/pause, pairing/phone answering/power; voice prompts announce headphone operations; aux input; led pairing and led power indicator; built-in rechargeable li-poly battery; micro usb battery recharge port; up to 5 hours of playback time at 100% volume, 10 hours at 50%; up to 2 hours for battery recharging; includes 3.5 mm aux cable, micro usb to usb cable, warranty, and user's guide; matte blue;