Main Features: ●Bluetooth 5.0, faster, more stable than Bluetooth 4.2 for perfect wireless music experience ●The latest high-quality speakers reproduce great extra bass, stereo surround sound ●Up to 18h music time, more power with 300mAh charging case ●Binaural call for enjoying chatting with CVC 6.0 noise cancelling filtering out background noise ● Waterproof Touch True Wireless,Ergonomic, sweatproof, comfortable fit for sports ● Compatible with nearly all Bluetooth devices, ideal for smartphones, tablets, laptops, PCs, etc. Tips: 1. How to connect: just unbox and pair to your device, they will pair with your device automatically. 2. When not in use for about 3 – 5 minutes, i11 will automatically turn off to save power.you can power it on/off, call/reject, which is convenient to use. Simply put your earbuds near the charging interface and they will be held in place magnetically and recharge.