The speedometer of the motor! Registers speed up to 399 km / h. The supplied magnets fit on almost all wheels and engine types. Equipped with large control knob, thereby also be operated with gloves. Extra strong and long cable (length 150 cm, diameter 3 mm). Easy assembly, self-powered (independent of the vehicle power supply). Holder for mounting on standard pipe diameters 22-32 mm. Waterproof.