Product information:

Model: S109 (Chip AB-5335B)
Packing Size: 7.64*1.78*1.14cm
Weight With Packaging: 0.014kg
Color: Black/Blue/Grey
Bluetooth Version: 5.0
Standby Time: About 1000 Hours
Battery Capacity: 90/180mah/20 Hours
Charging Interface: Micro-Usb
Charging Voltage: DC 5V

Features: Charge For 1 Minute And Talk For 1.5 Hours. Charge For 3 Minutes And Talk For 3.5 Hours