Butane cordless glue gun can go anywhere, outdoors or indoors. Butane gas power lets you glue those hard-to-get-to jobs with cordless freedom. Perfect for professionals. Takes 4 minutes to heat up. This glue gun has a patented magnetic thermostat control that keep the glue gun at the optimum temperature for best bonding results. Additionally, the melt chamber ensures excellent mixing of the glue flow for higher output of glue. A piezo ignition, just click the ignition button and the gas is ignited. Once the temperature reaches it optimum temperature the combustion window will not glow, indicating the gun is ready for use. Use standard butane that can be purchased at any hardware store. Lasts up to 2 hours when full. Completely safe - no flames. Use standard 7/16" diameter glue sticks. Weights: 27.8 ounces (789 grams)