Specification(approx): Size: Hour hand length: 31.5cm /12.4" Minute hand length: 39cm / 15.3" Clock machine face: 12cm/ 4.9" Material: Mirrors face,Alloy clock, Waterproof high-density EVA foam Package Included 1x DIY Clock Sticker Steps to install: 1) Hammer hook for clock into wall, (Pins should face outward toward you, and hit them with hammer enough to secure to wall); 2) Hang clock base on hook, and then attach the template dial to base. (It is better to tape it down to the base until you make all your marks on the wall, since it moves around a lot.); 3) Use template dial to mark wall, (pop hole out of it, to make sure the line is in the correct position, also trim the end so the 60cm is at the end); 4) Remove template and Pop foam numbers out of mold. Next stick and position them on the wall; 5) Peal the paper side off the acrylic number number fronts, one at a timer. Then peal stick backing affix on top of their appropriate number; 6) Now remove clock base from the wall, and attach the hands. (Peal plastic off the hand faces first). Place the Large minute hand onto the base first. Second, add the small hour hand; 7) Place small screw in place to keep hands attached to the base, and insert the battery; 8) Use the dial on the back of the clock to adjust hands to the correct time; 9) Hang clock base back on wall and admire :) Small Pieces Note: 1. There is a screw-on cap that goes in the center piece to keep the hour/minute hands in position. It is very small, can be easily lost during installation if you're not careful, and it could be a choking hazard if small children are around. Once in place, though, it seems very safe as it's hard to get back off. 2. Make sure you peel off the protective coating film after installing hands or roman numbers.