This is a bicycle parts wall clock made out of recycled bicycle sprockets. The clock measures around 5.4'' cm ( around 13.5cm) in diameter. It is made with a brand new, non ticking quartz clock mechanism. Runs on 1 AA battery. We can offer a custom engraving of your choice on a small, brushed metal plate affixed to the back of the clock. It will make a great gift for any bicycle lover or someone who already has everything. It also looks great & will make a great conversation starter in your home or work place. & of course, it tells time! :) See our other clocks: clocklight.etsy.com All my bicycle clocks are made from real, used bike parts. They are thoroughly cleaned but might show some signs of previous usage like small nicks, scratches or small spots. in my opinion that adds to item's charm. Thank you for looking, & if you have additional questions don't hesitate to ask, I'm here to help. Bicycle Parts Wall Clock, Unique Gift Idea For Cyclist Boyfriend Husband Father Brother, Handmade Industrial Decor, Anniversary