Wireless Bluetooth Headphones, Wireless Sports Earphones Sweatproof Portable Stereo Mini Lightweight Earbuds with Mic & Noise Canceling Headphones for iPhone Samsung and other Bluetooth devices WIRELESS AND CONVENIENT: Bluetooth 4.1 makes the Simger Mini headphones extraordinary. Plugging your phone in to listen to music is unnecessary. With the built-in mic you can easily take calls. Bluetooth 4.1 technology enables wireless connections to your smartphones and other devices. STATE OF THE ART EARPHONES DESIGN. Best workout sweatproof bluetooth headphones. Great for walking, Jogging, Hiking, Biking, Gym and some other activity. EASY TO USE Technology with voice notification of incoming calls and phone numbers. Voice Dialing.Superb microphone quality. Switch the earbuds on both sides of the charging dock or adjust the position of the earbuds in the charging dock. WITH EASY TO USE BUTTONS Allows Skip/Play/Pause on all your music tracks as well as all phone use without reaching your phone. Up to 30ft Bluetooth range in the open space. Super quick pairing with all android and IOS devices. You can adjust the position of the earbuds in the charging dock then charge it again, if it still turn off soon, it may has been fully charged. you can try to use it , it usually can last about 4 hours for continuous use; SUPERB SOUND Quality headset with Bluetooth V4.1+EDR for best stereo sound and superb bass sound. Clear high & low volume. Best wireless earbuds sound. .Press and hold the Silver Button instead of Side Black button until the blue light on.