Product information Material: Plywood Wood pieces: 110 pcs Assembled time: 5.5h This self-assembly wall clock 3D wooden puzzle is a perfect combination of machine and romance. It is a real clock that tells you accurate time after finish. With horizontal adjustment device, gear drive and gravity pendulum design, this unique clock will be great in funtionality as well aesthetics. Build it with your own hands and place it on your wall to upscale the look of your space!