About this itemBluetooth 5.1 provides faster pairing and a more stable, efficient wireless connection. When you take out the wireless headphones from the charging case, they’ll automatically connect to the last paired device. (after being paired the first time) Wireless earpiece last 5 hours of music time on a single charge. and will provide an additional 45 hours with multiple charges from the portable compact charging case. Quick charging technology enables 2 hours of listening from just 15 minutes of charge. Touch Control is sensitive and can achieve more functions. Easily achieve Play / Pause, Answer call / Hang Up, Next Song / Previous Song. Unique intelligent digital display for easy check of battery capacity. You can check the state of charge of your device at all times. Wireless headphones boast IPX6-rated protection that defends against liquids in most bad weather conditions, keep out water, sweats and rains, whether indoor or outdoor. Completely free of wire, cut off the cable hung around neck when compared with traditional sport Earbuds. With zero wires to hold you back, you’ll always have your music to motivate yourself. Uniquely built for sports, running, hiking, jogging & other outside activity etc. Features:1.It's the time for Bluetooth 5.1,the compatibility and the stability, have been improved several times than old Bluetooth version.2.Can automatically Pair, Power on after taking out from the charging case.3.Wireless stereo, left and right channel separation,both ear can be used separately.