This is an E-Ink digital watch from "phosphor" company. It should work if you put in a battery, but it hasn't been used for a while and has been stored at home, so I cannot guarantee its functionality. Please be aware of this. - Brand: phosphor - Name (Model Number): DIGITAL HOUR W. METAL (DH03) - Color: Black - Accessories: Box, spare links, pin - Design: Digital display The following is an excerpt from the website: The curved watch face is made possible by special technology. It's a cool watch that incorporates the new E-Ink electronic paper technology! Model Number: PPR-02-0006 Digital Watch 5 ATM (water resistant for daily use) Size: Approximately 38 x 54 x 12mm Materials: Case: Stainless steel / Band: Stainless steel / Face: Mineral glass Country of Origin: China Nearly 180-degree visibility! The white and black can be inverted, and the watch face can be changed freely with the push of a button!