Nisshin Desk Clock Master Quartz Desk Clock This is a desk clock from Nisshin Tokei Kogyo Co., Ltd., a "Master Quartz" clock. Made of brass. Interior clock Stylish item Retro desk clock Please refer to the photos for the size. Weight: Approximately 4.5 kg It's heavy. The spring in the battery box was rusty, so I cut off the weak part and removed the rust with a file. I inserted a size D battery and confirmed that it works properly. Nowadays, this brass clock with a blue dial and a glass case is hard to come by. It is a valuable Master Quartz desk clock. It features a Showa retro vintage design. The movement is quartz, and it has a rotating pendulum. It has an antique appearance with a gold frame and a blue dial. It runs on one size AA battery. Batteries are not included. When removing the glass case, release the hook levers on both sides at the bottom, and the glass case can be lifted up for battery replacement and time adjustment. This one is available for 8,500 yen.