ColdHeat instant heating and cooling technology makes it perfect for even inexperienced hobbyists. Portable the ColdHeat Soldering Iron takes 4 AA Batteries (not included). Durable too with a rugged Polycarbonate shell. Quick: heats instantly Safe: cools quickly Portable: Cordless and powered by 4 AA alkaline batteries Convenient: polycarbonate carrying case work space light activation light Versatility: high-low power Switch make the Pro perfect for small or large jobs Long-life: 700+ joints per set of batteries Durable: rugged polycarbonate shell and heavy-duty circuitry and components