【Digital Battery Display & 8 hours of Use】Equipped with individual power display screen, Vislla A9S Sport Headphones let you know the remaining battery of the charging box and the charging status of the earphones anytime. Built-in 100mAh capacity battery on each bud, headset will last up to 8 hours per single full charge. Get additional 24 hours of recharges from charging case, keep your music going all the day even go out, never worry about battery shortage. | 【Comfortable & Secure Fit】Adopted ergonomic and sport design, Vislla A9S Bluetooth sport earphones enhance your wearing experience. The flexible & secure-fit ear hooks ensure earbuds stay put and never fall out. 3 pairs of soft and different sized ear tips for user to choose the most snug fit. | 【One-step Automatically Pairing】Benefit from Bluetooth 5.0 chip & technology, these wireless earphones will auto power on and pair with the device once taken out from the charging dock. No any skill required, even old grandpa can use flawlessly. User can easily skip track/adjust volume/activate voice assistant through the one-button control. | 【Hi-Fi Stereo Premium Audio】Features with CVC 8.0 noise canceling technology & 10mm Dynamic Drivers, Vislla A9S will produce powerful loud sound with deep bass. More stable signal transmission and lower power consumption, let you enjoy your wonderful life all the way. | 【True Wireless Sports Headphones】Without any cord harass around the neck, the upgraded true wireless Vislla A9S headphones gives you more convenience and freedom. Free your hands when doing exercise, these true wireless Bluetooth ear buds are especially made for jogging/hiking/fitness/biking etc.