Long Battery Life: Enjoy up to 4 hours of continuous use on a single charge and up to 720 hours of standby time. The charging case can charge the earphones up to 3 times, giving you even more listening time on the go. Perfect for long trips, workouts, or just to enjoy your favorite music all day long. With these Bluetooth headphones, you don't have to worry about running out of battery in the middle of an important conversation or during your favorite song. The long battery life makes them a reliable choice for all your audio needs. They are compatible with devices from APPLE, Samsung, and Huawei. Ergonomic design: The rotating ear hook adapts to different ear shapes, ensuring a comfortable and secure fit. The lightweight headphones sit comfortably in your ear without causing discomfort, even during prolonged use. The ergonomic design makes them ideal for sports, workouts, and other activities where you need headphones that stay securely in place. You can move freely without worrying about them falling out. This design is compatible with devices from APPLE, Samsung, and Huawei. Smart LED display: The charging case has a clear LED display that shows the battery level in real time. You can easily see how much power is left in both the headphones and the charging case, so you're always prepared. This feature is especially useful when you're on the move and don't have access to a charging station. With the smart LED display, you can plan your usage and avoid running out of battery unexpectedly. It is compatible with devices from APPLE, Samsung and Huawei. Specifications: Color: Multiple options Size: Length: 9.5 cm, Width: 9 cm, Height: 2.5 cm Material: ABS + electronic components Parameters: Headphone capacity: 30 mAh, Charging case capacity: 200 mAh, Charging time (case): approx. 2 h, Charging time (headphones): approx. 1 h, Battery life: approx. 4 h, Standby time: approx. 720 h, Charging case can be charged