Generic Sport Headphones Bluetooth 4.0 Headsets with Magnet Design and Sweatproof for iPhone 6/6S Plus, Samsung Galaxy S7 and more (Gray) Bluetooth 4.0: The headsets give you the power of Bluetooth V4.0 technology for seamless syncing to your devices up to 10m. Magnet Design: This magnetic attraction prevent falling, so just hang like a necklace around your neck and do some sports. Play time: The Earbuds are built-in with 55mAh lithium battery, 5 hours of play time on a full charge, 180 hours of standby. Hi-Fi music and HD calling: It brings 360 HD Stereo and shields external noise. Package content: 1 * Sport Bluetooth headphones; 2 * Ear cup; 4 * Silicone ear buds; 1 * USB charging cable; 1 * Manual; Our worry-free 18-month warranty.