This is an analog CASIO travel clock. By turning the bezel, you can display the time in various locations around the world, and it also supports daylight saving time. I used it as an alarm clock when traveling abroad. How about it as a retro-style clock now? The operating sound is also a nostalgic tone. (Operation confirmed, alarm also OK.) - Brand: CASIO - Model: WORLD TIME - Function: Quartz - Design: Square - Color: Black - Features: World Time, Daylight Saving Time A single AA battery used for the operation check is included. There is no instruction manual or box. Thank you for looking.