Description:True wireless: The earbuds adopt bluetooth-compatible V5.1 technology, easy to store and carry because there is a charging case, you can enjoy good music easily.Hands-free calling: The earphones have a built-in microphone, you can answer calls easily, freeing your hands and convenient for you to do other things when calling.Rechargeable: The charging case makes it easy for you to charge your headset, and the shell can display the electric quantity, the long-lasting standby time is not easy to make trouble for you.Low-latency: The headphones work with HiFi sound effects and they provide you with clear and lossless sound, you can order according to your likes.Waterproof: This headset works with IPX4 protection, preventing water and sweat effectively, suitable for working, doing sports and daily use.Specification:Color: show as pictures.Size: show as pictures.Bluetooth-compatible version: V5.1.Waterproof: IPX4.Work time: about 3h music, about 4h calling.Transferring distance: approx. 10m/393.7inch.Charging port: micro.Standby time: 120-130h.Note:Due to the light and screen difference, the item's color may be slightly different from the pictures. Please allow a slight deviation for the measurement data and make sure you do not mind before ordering.Package Includes:1 Pair Earbuds(with 1 Piece Charging Case, 1 Piece Instruction).