Jabees Bsports Bluetooth Sports Headset V4.1 Chips NFC Stereo Waterproof Swimming Headphone (Blue) Bluetooth V4.1 Class II: More secure and stable connection. Less power consumption. Multipoint connections with 2 phones. Battery indicator on iOS devices. Voice prompt available in English. Perfect for Workout: Comfortable, stable, and sweat proof. Built for action. Fits comfortably in your ear and stays fit for all levels of exercise. The easily accessible on-ear control lets you keep moving while you control your music or calls Sweat Proof IPX4 Rating: You can rely on BSport to work as hard as you can under any circumstances. (rain, sweat, and even the splash of a sports drink). Universal compatibility with almost all the Bluetooth-enabled devices. With removable earhook and cable cinch to make sure the Secure-Fit. Supports aptX for CD-quality sound and superb bass resonate; The built-in NFC tag for fast connection. With dual-mic for noise and wind reduction. Enjoy High quality music:Bluetooth 4.0 and aptX technology,Delivers CD-quality wirelessly over bluetooth from iphone 6 iphone 6s,samsung or other.Good sound insulation,stereo bass,6 hours for music.I love it.you also can love it.