Eleaf iStick Mini - 1050mAh Battery

Eleaf iStick Mini 10W Specs:
1.Top LED Digital Display: Display parameter (vaping seconds, battery power, current voltage) in a circular digital screen.
2.Adjustable Voltage:Press the up-and-down arrow buttons to increase/decrease the working voltage between 3.3V to 5.0V.
3.Large Battery Capacity: The capacity of Mini iStick is 1050mAh despite the tiny size.
4.Voltage: 3.3V-5.0V
5.Wattage: 10W max

How to charge? 
Mini iStick can be charged through USB port at the bottom of battery. It will take 1.5 hours to charge the battery with 1A wall adaptor.