How to fill the gas?
1.Pepare a bottle of lighter gas.(Butane gas is prefered)
2.Shake the gas bottle,then put it upside down with nozzle into the lighter watch's gas inlet in the upper right side as the following picture show.Push the bottle 2-3 times to refill the gas to the lighter watch.
3.Please retary the nozzle to fit the gas inlet tightly if gas spraying.
4.Please make sure there is no flame nearby when refilling the gas & don't use the lighter immediately which may lead to danger.