Ultra-quiet blue core clock: ultra-quiet, blue core clock, ultra-precision, , warm life, quiet time. Shape:Circular Installation method: Step 1: Drive the steel needle on the nail into the wall with a hammer, and be careful not to break the small tail of the nail during the knocking process. : When the steel needle is parallel to the nail and there is no protrusion, even if it is knocked, the steel needle enter the wall for about one centimeter. Step 3: Adjust the wall clock, and install the battery to hang it on the nail. It is easier to hang the clock when it is slightly higher than the nail and then hang it down. Color: Yellow & Black Material: Glass+Plastic Package Contents: 1 x Wall Clocks Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.