The Micro-Therm MJ-600 is a great inexpensive pocket sized cordless butane heat source. It functions as a great alternative to electric heat guns. It is ideal for hobbies, automotive, household, and heat shrink tubing projects. Comes standard with a refillable butane housing, a waterproof piezo electronic ignition, safety lock trigger, and a reflector shield for use with heat shrink. Reaches temperatures of up to 1200°F. Each fill will run for approximately 20 minutes; however it is not recommend to run the MJ-600 for more than 5 minutes continuously.