Koolulu Bluetooth Headset Few things get you more motivated than pumping up the jam when you're working out. Few things get you more aggravated than your earbuds constantly falling out, wires getting tangled, or your tunes dying out before you do. Stop wasting important time! Concentrate your efforts on getting the heart rate up and the sweat pouring instead of fiddling around with your headphones. This Bluetooth headset is ideal for fitness buffs. They're comfortable and convenient, with an ultra-lightweight design that's going to keep them in place. Now that's music to your ears! Bluetooth 4.1 + EDR Stereo sound Memory flex neck strap with magnetic ear buds Single mic Call reject Echo cancellation Noise reduction Last number redial Auto reconnect Multipoint connection Easy pairing Battery status alert A2DP (Advanced Audio Distribution Profile) AVRCP (Audio/Video Remote Control Profile) Up to 10 hours of talk time Up to 360 hours of standby time Up to 10 hours of music play times Less than 2.5 hours of charge time 5-pin connector port 33' Bluetooth range Measures approx. 5.3" x 6.6" x 0.66" Available in black