Use Blink to add a unique and decorative touch to any wall. This wall clock mechanism operates on a quartz clock movement that ensures precise and maintenance-free time measurements. Blink’s metal time indicators and the number 12 mount individually to the wall with easy-to-paste adhesive and the clock mechanism mounts with a screw or nail. The size is customizable (depending on your preference), but Blink does include a preset wall template. All you need is one AA battery (not included).