Feature:1. [Individual Power Display of Earbuds and Charging Case] L/R Bluetooth earbuds battery separated LED display design can display the remaining power of the charging base. When you put it in the charging box, you can know when is the best charging time.2. [Long Standby]: Built in 1200mAh rechargeable battery charging case, wireless earbuds can play for 2.5 hours on a single charge, and portable charging case can provide 15 recharges. Put the earplugs in the charging case and they can be charged automatically.3. [One Key Pairing] Fast, stable and efficient transmission to ensure your excellent experience. Take out the left and right Bluetooth headsets from the charging box, "E10" will automatically appear on the smart phone, and you can use it after connecting.4. [Snug Fit] Ergonomic designed to fit comfortably in your ears for many activities, stereo headphones come with four adjustable ear cup sizes right from the box, you can concentrate on reaching new heights in your workouts.5. [IPX7 Waterproof] The true wireless earbuds against damage from sweat or rain. And the earbuds won't get in the way of enjoying sports, music and calls. Perfect for fitness traveling and etc. Note: the charging case is not waterproof.Specification:Item Type: Wireless EarbudsMaterial: ABSModel: E10Colour: BlackBluetooth Version: V5.1Transmission Distance: Approx. 10m / 33ftTalk Time: About 3hPlaying Time: About 2.5hHeadphone Standby Time: About 80hHeadphone Charging Time: About 1hCharging Time in the Charging Case: About 2hHeadphone Battery Capacity: Built in 50mAh lithium batteries x 2 (included)Charging Case Battery Capacity: Built in 1200mAh lithium battery (included)Scope of Application: Suitable for mobile phones, tablets, laptops and other devices that support Bluetooth.Package List:2 x Earbuds1 x Charging Case4 x Spare Cups1 x Data Cable