Besign SH03 Bluetooth Sports Headphones with Microphone for Wireless Music Streaming and Hands-Free CallingBluetooth 4.1The latest Bluetooth 4.1+EDR technology provides lower power consumption and wider compatibility. You could enjoy your smart phone music or handsfree calling wirelessly.Perfect FitErgonomic design is a perfect fit for your ear, and stays in place no matter how vigorous your exercise. Memory foam ear cushions provide an immaculate fit.Long Music TimePlay for up to 25 hours; longer than most earphones on the market. Bluetooth 4.1 ensures a connection range of up to 33 ft, compatible with the iPhone 7 or any Bluetooth device.Motivating Sound36mm drivers deliver crisp, clear music to your ears via a smooth, skip-free connection. Enjoy high clarity sound with dynamic base performance. Hear the beat when you feel the heat of your passion.Hands-free Phone CallTake phone call and chat to your friend with clear voice. CVC noise cancellation technology eliminates microphone noise.Foldable DesignBehind-the-head design for luxury comfort; foldable arms for protective storage and easy portabilityWhat's in the box?1 X SH03 Bluetooth Headphones1 X USB charge cable1 X Manual1 X Travel Pouch