Product Feature: After the first successful connection, the sports earbuds will automatically connect to the last paired device when reboot. Wireless earphones for work, home and office. Ergonomic Comfort Sports Design: The true wireless earbuds included soft ears hooks are specially designed.The unique secure-fit ear hooks are customizable with multiple ear tips options to ensure the earbuds won't fall out during workouts without wire hung around neck. Perfect for running, hiking, yoga, exercises, gym, fitness, traveling and etc. Comes in 2 sizes of silicone ear buds for perfect fit and sound effect. Either Earbud Can Be the Master and Touch Control: Use earbuds as mono earbud to take calls or music while driving or crossing the street, and keep the other in the case. Simply pick both earbuds as the binaural stereo mode to immerse into music. Also, the touch control button supports volume & calls & tracks control more convenience. Bluetooth 5.0chip with lower power consumption, Bluetooth headphones can offer 3.5 hours of continuous playtime. In addition, the 700mAh charging case provide wireless charging 3 times. Bluetooth 5.0 version features fast and stable signal transmission, clear sound quality without skips and distortion and low power consumption. At the same time, TWS Stereo Headphones provides Hi-fi sound quality, the sound of immersive music scene surround sound, let us feel more realistic music Product Specifications: Bluetooth version: Bluetooth 5.0+EDR Bluetooth distance: about 20 meters Headphone battery: rechargeable lithium battery 50MAH Rechargeable battery: 700MAH rechargeable lithium battery Frequency: 2.4GHz Standby time: about 40 hours Charging time: about 1 hour Talk time: about 5 hours Playing time: about 3-5 hours You Get: 1 X Bluetooth Earphone 1 X USB Charging Cable (not including charging head) 1 X User Manual Before you place an order, please provide me with English information to facilitate our delivery and logistics