Bluetooth Headset, Coiwin HV-930 Wireless Bluetooth Headsets Hand-free Headphones/Earbuds, Neckband Noise Canceling for Iphone/Ipad/Sony and Other Bluetooth Device (HV-930-Blue) 1.Provide High-fidelity: HV-930 Bluetooth Headsets provide stereo music and Crystal Clear HD sound. With Built-in APT-X technology, the wireless earphones reproduce CD quality sound over a bluetooth connection for any bluetooth enabled device. 2.Connect 2 Device Simultaneously: It can connect with two phones at the same time, so you don't have to stop one phone before connecting another one. 3.Super Long Standby Time: Standby time up to 16 days, 8 hours for music and 10 hours for talking. So it's the perfect entertainment for relaxing at home, doing things around the house, making dinner, etc. Just enjoy it everywhere and anytime. 4.Simple-To-Use: Built-in microphone, multifunctional key allows you power on/off, answer/hang up/reject the call, pause and play. Easy to operation with excellent sound effect collection, superior sound isolation, efficiently reduces external noise. 5.Excellent for Exercise: Lightweight, sweatproof and designed to stay securely in place during sport/cycling/workouts. You have 3 choices (L/M/S) of ear cushions to adjust to the contours of your ear and giving you the perfect fit to ensure they never fall out. These are nice bluetooth workout earbuds for exercise you will find.