Bluetooth headphone, wireless, stereo, sweat resistant perfect for iPhones 4S, Android phones and iPads. Enjoy the freedom of no wires, no tangles. Lightweight, comfortable, customizable fit, with 4 different sized earpieces including Acoustibuds (medium) in-ear type earbuds. Great for an active lifestyle, use with helmets, glasses, sunglasses, hat and headbands. Great sound, full bodied bass, crisp clear highs. Easy to use buttons, answer calls, play, skip forward/back, pause music. Use with Skype. Perfect headphones to use with the Siri function on your iPhone 4S. Best Bluetooth headphone for sports. Colors: dark grey with light grey buttons.