This is a Kundo electromagnetic clock. The D cell battery fits in the bottom. The magnetic impulse keeps the pendulum swinging. Many months, possibly years use of a single battery. There is a pendulum tie down for moving or shipping the clock. Three are also three adjustable feet on the bottom for balance. The weighted pendulum can be adjusted for altitude etc. the glass dome is in tact but there are small chips on the bottom only. Not noticeable when the dome is in place. This is a nice running clock. The clock weighs 1.7lbs without the battery. It is about 6” wide and 9.5”tall.