Stable and Fast Connections: with Bluetooth 5.0 technology: T18 bluetooth earbuds ensures fast and stable connections, as well as low power consumption and low latency. You can use your earbuds independently or both of them at the same time . Premium and Immersive Sound Quality: Featuring two 10 mm dynamic drivers, our T18 wireless earbuds provide powerful bass, clear vocals, and crisp high tones, making crystal-clear phone calls easy. Ultra-Long Battery Life with Type-C Charging Port: Enjoy your favorite playlists non-stop for 5.5 hours on one full (one-hour) charge. Letsfit Bluetooth earbuds include a 450mAh charging case, providing a total of up to 28 hours of playback. One-Step Pairing: After set-up the first time, the wireless earbuds will seamlessly and automatically re-connect to your Bluetooth-enabled device, allowing you to start listening right away. Ergonomic Design, IPX5 Waterproof: Our headphones are desinged for wearing comfort and are protected against rain or splashes, perfect for staying focused and motivated when training.