This is a golf GPS navigation system. It displays the distance to the green, course layout, elevation changes, and more, supporting score improvement and strategic play. ● Size and Weight: Width: 62mm Height: 112mm Thickness: 14.7mm Weight: 115g ● Condition: I was using it until recently, but I used it in a case, so there are no noticeable scratches or stains. If you can accept that it is a used item, please consider it. ● Other Notes: There is no instruction manual. You can download it from the internet.