Earphones, Blusmart Bluetooth Headphones V4.1 Wireless Sport Stereo Noise Canceling and Hands Free Headset with Mic - Black 1.Best Fit For You:Sport earphone comes with optimal size silica gel so that you can best fit for your ears. What's more, the ear buds are updated to be softer and stickier to your ears, which are more comfortable to wear. 2.Excellent Battery Design:As most other Bluetooth Headphones are maxed out at about 5hour battery life, Blusmart Bluetooth earphone give you an awesome 8 hour long battery life, so you can spend less time charging and more time using it. 3.Easy to Use:The Blusmart Wireless Bluetooth 4.1 Sport Headphones is designed to save energy in which the headset.you could you use it anywhere,hiking ,travling,home ect. 4.Latest Bluetooth 4.1 Technology :Easy and fast pairing with smartphones, tablets and other Bluetooth enabled music devices; Offer you impressive dynamic sound. Noise Cancellation 6.0 reduces outside noises and enables clearer sound from microphone. You can get high quality, hands-free phone conversation even on the street or inside shopping mall. 5.Best Customer Service: one year warranty and quick, friendly customer service. All concerns and inquires will be responded within 24 hours for 100% satisfaction guarantee.