INDIVIDUAL POWER DISPLAY AND CHARGING CASE - The LED screen design is separate from the left / right bluetooth earphone battery and it will display how much battery left in the charging dock when you put it in the case, you know when it is the best time for charging Up to 220 hours run time, on-the-go charge - Built-in charging case with 2000mAh rechargeable battery, the wireless earbuds can run for 5.5 hours on one charge, the portable charging box can provide 220 hours of power Can be charged automatically once the earbuds is in the charging box. You can go out for the fun without worrying about battery loss, as your needs are met from the beginning to the end of the day. The latest Bluetooth 5.1 technology, one-step pairing - ensures you a great experience with quick, stable and effective transfer. Take out the left and right Bluetooth headphones from the charging box, then automatically show "TWS5.0" on your Smartphone. Keep your mind comfortable when calling or music without worrying about shortage. SECURE FIT - Ergonomically designed to fit comfortably into your ears for an active lifestyle, SGNEX Stereo Headphones come in three adjustable sizes directly from the case, you can focus on reaching new heights at your workouts. ABX 7 WATERPROOF - These wireless earbuds are resistant to damage caused by sweat or rain. Will not impede sports, music and calls. Ideal for travel, fitness, etc. Note: the shipping box is not waterproof. If for any reason you are not satisfied with your purchase, please feel free to contact us any time.