Fantime Bluetooth Headphones V4.0 Wireless Hands Free earbuds Sports Headphones Sweatproof Headsets Noise Cancelling Neckband Bluetooth Headsets for iOS/android Smart Phones Good speaker and Crystal sound: The built-in speaker with true copper ring has good sealing and stability, and will effectively insulate the white noise. So you can enjoy a crystal clear speech/music/films. Ergonomic design and comfortable in-ear, Light weight and sweat-proof, it is portable for you to take outdoors for sports/running/driving and so on. Compatible phone numbers: The Bluetooth headsets apply to many kinds of Bluetooth devices, such as iPhone4/4S/5/5S/5C/6/6S/6plus, ipad, ipod and all IOS system, Samsung Galaxy S5/S4/S3, LG, HUAWEI, Sony, Motorola and other Android smart phones, Laptop and Computer, and other bluetooth devices. CE ROHS materials and exquisite craft: The headsets adopt environmental ABS + PC materials and wont cause damage to the body. Spraying UV craft makes the surface brighter and more smooth. Function: bluetooth v4.0 compatible v4.1, noise-cancellation, accept or reject calls, last number redial, voice prompt, voice command, battery display, one connect two phones and so on.