Features: Accurate travel time-, 1 second daily error, life 2-3 years, low power consumption, ordinary battery can be used for 6 months. Suitable for craft clock, wooden- wall clock, metal wall clock, electric box wall clock, porcelain crystal painting, maintenance and replacement, DIY- home decorations clock. The movement uses 1x 1.5V-AA battery. advised for carbon battery, not alkaline battery, otherwise the current too large, affect travel time-. Shaft length: 22mm, thread height: 15mm, suitable for 8-12mm thick clock panel. Note: Pointer- installation method- please refer to the pointer- installation diagram, three pins installed, the side of the three pins should be parallel-, do not touch- the needle as well. Specifications: Core size: approx 56x56x16mm/2.2x2.2x0.63in Shaft length: approx 22mm/0.87-inch Screw Height: approx 15mm/0.6-inch Hour pointer- length: 8mm-/0.3-in Minute- pointer- length: 140mm/5.5-inch Second pointer- length: 133mm/5.2-inch Note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the differences between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Quartz Clock