Spinzo 100GR Umpire Watch! Simultaneous countdown and count-up display! Please check the manufacturer's website for details! Purchased from a sports specialty store about 3 years ago! I rarely had the opportunity to umpire, so I only used it a few times for exercise! The battery was replaced with a Panasonic battery at a watch store on February 12, 2026, and I, a layman, have confirmed that all functions are working! The watch store pointed out that one of the screws on the back cover was loose, but they said it wouldn't affect normal use! Please understand that this is a used item and has been stored by a non-professional. There is peeling on the screen film, but the glass part is clean underneath! There is no warranty card! I lost the instruction manual that came with it. Thank you for looking.