STATE OF THE ART EARPHONES DESIGN. Best workout sweatproof bluetooth ear buds. Great for Running, Jogging, Hiking, Biking, Gym etc. Stay in Ear Tech with Comfortable Ear Hook. Neckband design, no wires tangling, and it's easy to storage to your sports armband or arm package bag. SUPERB SOUND Quality headset and Bluetooth V4.1+EDR for stereo sound and superb bass sound. Clear high & low volume. Best wireless earbuds sound.Bulit-in mic with voice notification of incoming calls UP TO 8 HOURS Music playing for full battery charge. Super quick charge time with full charge light indication.The headphone battery status will be automatically displayed on the IOS Phone screen WITH EASY TO USE BUTTONS Allows Skip/Play/Pause on your music tracks as well as all phone use without reaching your phone. Up to 30ft Bluetooth range in the open space and 10ft in the obstacles space. Can be connected with two devices Simultaneously. Super quick pairing with android, IOS and other bluetooth devices. SOUND LEADERSHIP & VOICE CLARITY Due to CVC6.0 noise cancellation technology, the bluetooth headphone intelligently filters out background noise for perfect speech transmission in busy and noisy environments. Compared to Bluetooth 4.0, the latest Bluetooth 4.1 technology features faster & stable signal transmission, clearer sound quality and lower power consumption.