Crafted in brass this little clock looks like a miniature globe - thus the name Globe clock! A globe clock adds to charm to any table or shelf. ................................................................................. Material and Maintenance Brass and Glass Brass tarnishes over time. Wipe with soft dry cloth or with brass polishing agents to get the shine back. The clock is battery operated and the cell can be changed by un screwing the back. Time can be adjusted using the small knob on top.