T17 is true wireless earbuds designed. It’s your workout companion with secure fit. 48 hours play back with charging case. Sound Quality. The earbuds produce stereo sound. Design for Sports..The earbuds are specially made for sports. With adjustable, secure fit silicone ear hooks and silicone ear tips that make earbuds sit securely and comfortably inside the ear. Auto Pairing and Auto Charging. Turn on and pair with each other automatically when taken out from the charging case.When put back into the charging case, they will be charged and turn off automatically. Multi functional Press Button Control. Two earbuds can make and receive call. Each earbud has function of volume adjustment and track control. Stable signal connection Good sound quality Low power consumption Sports Earbuds, Everywhere, Every Moment, Secure for Excercise. 1.The charging case power display is from 1% to 100%. Pick up the earbuds and then put them back to the case, that help activate showing the power of the case. 2.Put earbuds into charging case,if LED bars for earbuds flash,it means the earbuds are charging. Once fully charged,led bars will turn off. 3.Stereo Sound Quality Adopting bluetooth rendering technology that produce stereo sound quality and crystal crisp treble. 4.48hours Play Time with Charging Case The twins wireless earbuds can last for 8 Hours music time on a single charge. The charging case can charge the twins earbuds for 6 times, So the twins earbuds can last up To 48hrs. 5.Comfy and Secure Fit With ergonomic ear hooks, flexible rubber, T17 offers stable fit and comfortable wearing. Even you are running fast, they still remain on your ears. 6.Widely Compatible Compatible with bluetooth enabled Cellphones tablets and all device with bluetooth; Design for Sports, Workout, Running,Gym Exercise, Audiobooks, Watching TV and so on.