S1 is a 3.7V lipo battery charger with multiple ports for quick charging, compact size and easy use feature make it be a great charger for you
Most USB Ports Are Available
Suits for all usb charging cables, ready for the charging when you unbox it.
When the battery is being charged the red light will be solid, if the light goes out it means that the charging is completed.
3.2x5cm(1.6*2in) portable size, very convenient for you to take along with and conpact enough for storage.