Completely portable, lightweight an and easy to handle, does not require cords, batteries, or cartridges Built-in window indicates fuel level 7 soldering tips, 1 heat tip, 1 torch tip, 2 hot knife tips and 4 specialty tips available as optional Refill with Master Ultrane Butane for best performance Meets U.S. consumer products safety commissions new child safety requirements, Manufacturer: Master Appliance