Kanger Uboat Kit consists of Uboat Mod and Uboat Cartridge. Uboat Kit is the ultimate closed system e-cig with the design of a submarine, the stealthiness of a submarine, and the power and precision of a closed system e-cigarette. A convenient and sleek system that allows you to refill the 2mL cartridge with ease.
Length: 22 mm
UBOAT Mini battery:
Battery: Built-in Li 550mAh battery
Output voltage: 3.7V
Coil resistance: >/= 1.5 ohm
Charging: Specialized charging dock, DC 5V/200mA
Very convenient, I like it.