3. They will automatically connect to your bluetooth device when you use again
4. This wireless earbuds also can be single connection.
Battery Capacity(Charging case): Internal 500mah rechargeable battery
Charging Case Size: 70 mm*30 mm*29 mm
Working Range: About 10M/35 feet
Wireless Version: Dual-mode Bluetooth V5.0, Ultra low power consumption
Standby time: About 150 hours
Working Time: About 3-4 hours with single earbuds; support incoming call number, IOS system power display