Its Slow Speed High Torque Motor. For heavy mini load works. You can use 5v 1a adapter or mobile chager. Best adapter will be 9v 1a or 2a adapter. You can also use 9v battery or 6v lead acid battery.
Package Include--
1 x N30 Motor
3-9volt 20watts N30 DC Powerful Motor
Speed: 5V - 3000 rpm
Current(no-load): 5V - 25ma
Shaft Diameter: 2 MM
Torque - 107 grm.cm