The tachometer is the main belt of the device, there is no cable to control the tachometer needle and nothing is specified in the instructions. Manufacturer doesn't provide contact information, this probably isn't the best choice if accuracy is important.
XFMT Full Face Motorcycle Helmet Flip Up Adult ATV Dirt Bike Carbon Fiber S (Large, White Pink Butterfly)
29 Review
ποΈ Xelement 7550 'Classic' Black Leather Motorcycle Chaps - Unisex, 36 Inches
35 Review
LEGO Technic 42107 Ducati Panigale V4 R, 646 children
44 Review
Xelement B7552 Men'S Black 'Easy Fit' Premium Leather Motorcycle Chaps - 36
32 Review