CatEye STRADA SLIM ■MODEL: CC-RD310W 　Slim Model, Equipped with Function Selection, Recommended for Road Bikes ■Simple Operation, Auto Start Model ■Includes a Small, Lightweight Bracket for Easy Mounting on Stems and Handlebars ●This item has been used for approximately 3000km on a road bike. There were no issues until removal. Instruction manual included. ●Includes 2 sensor magnets (convenient for tire changes, alternating use, etc.) New batteries have been installed for operational testing. Please consider purchasing if you understand that this is a used item.