HOW TO FILL: This is a refillable butane pen lighter. According to airmail regulations, the lighter you received will be empty, please fill it with butane before use. The correct way to inflate this lighter is: please use a small screwdriver or other similar tools to press the inflation valve to remove the remaining gas, so that the butane gas can be refilled smoothly. Otherwise, the air pressure may be too high because of the remaining gas inside, and the butane gas cannot be filled in. If it is filled forcibly, it will cause the gas to drip from the bottom. So when you can't fill the gas, you must remember to remove the remaining gas in the lighter first, instead of using a small screwdriver to disassemble the bottom. 1. Be sure that no visible flame or kindling when filling with gas,and keep unimpeded air around. 2.Drain any remaining fuel before refilling. 3.Turn the lighter upside down;Set flame adjuster to lowest before filling. 4.Please select a long nozzle butane can. Insert nozzle into the gas filling valve,press moderately for several times (hold for about 2-3 seconds each time.The filling time can be increased or decreased according to the actual capacity of the tank. 5.Wait at least 2 minutes after filling before using the lighter. 6.After injecting butane gas, if the lighter fails to ignite, please adjust the bottom flame regulator to the "+" direction.