Stable Performance --- Good insulation performance, adopts a variable speed system, low energy consumption, and strong load-bearing capacity. Outdoor Application --- The grill motor is wear-resistant, heat-resistant and low noise. Very suitable for outdoor camping, barbecue, etc. Durable & Sturdy --- The grill motor has a sturdy structure, is safe and reliable to use, and is durable. But you should note the small brass coloured rivet should line up with the (only) switch otherwise it will be distoried. Power Source --- powered by 1.5VD battery (not included) or 1.5V power adapter (not included). You can take a single U2 size dumpy battery for it. Related Parameters---output speed is 3~3.5RPM, rotation direction is CW/CCW, rotor output torque is 0-10.0kgf.cm.