Instruct: Classify the given Amazon review as either positive or negative.
Query: not worth the money

i have a motorized bike and bought this to keep track of my breakin period there were no instructions.and mine came in kph not mph iwould send it back but i instaled it before i realized it was kph not mph as it showed on the add that i bought it from iam not happy it looks like its ready to breake iam going to try to return it if ican find bikeamile frm where mine came from