Note: 1. Please refer pointed installation diagram for the installation way of the pointed. After the three pins are installed, the three pins should be when viewed from the side, and it better not touched the pins. 2. uses 1x1.5V-AA battery (battery not included in delivery). Suitable for: Suitable for clock with thickness of 2-3mm. Features of the clock movement: Accurate time, daily error of 1 seconds, life of 2-3 years, low power consumption, ordinary batteries can be used for six months. Wide use: Craft clocks, wall clocks, metal wall clocks, electric box wall clocks, crystal paintings, repair and replacement, decorative clocks and more.