Using this Batman Grapnel Launcher prop replica is easy. First, insert 3 LR1 batteries (you'll need to buy them separately). Once the batteries are in, hold the launcher firmly. Aim it in the direction you want to 'fire' the grapnel hook. Press the appropriate button to launch the hook. After use, the motorized spool will automatically retract the rope and hook. When it comes to maintenance, keep it in a dry place to prevent the plastic from getting damaged. Avoid dropping it or subjecting it to strong impacts. And if you're not using it for a long time, remove the batteries to avoid leakage.