This is a large wall clock made out of recycled bicycle parts. Black clock hands make the clock look really eye-catching. This bicycle wall clock measures close to 6.5'' (around 16.5cm) 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 recycled clocks are made from previously used parts & although they are thoroughly cleaned, they might show some signs of previous usage like small scratches, nicks or corrosion spots. Thank you for looking, & if you have additional questions don't hesitate to ask, I'm here to help. Large Wall Clock, Cyclist Gift, Bicycle Unique Modern Sprocket Bike Metal Clock