Another innovation from motogadget: the m-Button. It's a big help - in combination with the new m-Unit V.2 - in reducing 'cable clutter' and simplifying wiring harnesses. Integrated into the handlebar tube - or any other adequate location - this tiny cylinder will electrically connect all handlebar instruments, switches and buttons. Using state-of-the-art bus technology, the m-Button digitally processes signals and transmits them to the m-Unit V.2 over a thin cable. The electrical consumers will then be switched inside the m-Unit. All control wires are moved into the handlebar. This saves space, weight, labour and time. A 'must have' for custom bikes with clean-look handlebars. The m button has connections for - Left turn signal - Right turn signal - Light (alternating between low beam and high beam) - Electric Start - Horn - Front brake light switch Dimensions Diameter: 12 mm Length: 25 mm The cables have a length of about 60 cm. The cable to the m-unit is 200 cm long. Weight about 30 gr Please note that the m-Button can be used only with the m-Unit V.2, part # MG4002033