Supfait V4.0 wireless Bluetooth Lightweight Neckband In-Ear Sport Stereo Headphone Headset Earbuds With Microphone For Smartphone(blue) Bluetooth 4.0 with advanced Pure Sound delivers a clean audio experience ,enjoy wireless music anytime anywhere Sweat-proof, light weight, convenient to carry, easy to use. up to 5 hours of premium quality talk/play time the built-in microphone also let you get high quality clear voice, hands-free phone conversation avaliable Fully compatible with iPhone 6S Plus, 6S, 6, iPad, Samsung Galaxy, Android Smartphones and tablets, Windows devices, and all popular Bluetooth devices Enjoy music while running, jogging, cycling, driving, camping, hiking gym exercise and other outdoor sports. Package Content: supfait QY7 Bluetooth Headphones, USB Charging Cable, 6x Ear Cushions, 6x Ear Hooks, supfait bag, User manual