How to fill the gas into the lighter: 1 prior to use gadgets withstand the inflatable core, entirely off the residual gas inside, so that the pressure inside the tank lighter is eliminated; - 2. the lighter is placed in the hands of the inflated inverted with authentic 3.6-4.2 atm butane gas lighter gas inlet port aligned with the nozzle, several moderate extrusion, the gas can be charged. - 3. Wait about 5 minutes after the completion inflated in order to use the case as five minutes later still beat the fire, set the tone regulating valve can be bigger. ( turn to "+" to make the flame big, turn to "-?to make the flame small).