This is a CASIO digital watch with a blood pressure monitor, the "BP-1B (Module 2197)," which appeared in the 1990s and gained popularity for its unique design and advanced features. It's a gem packed with CASIO's playful spirit and technology of the time, allowing you to measure blood pressure by placing your finger on the sensor on the right side. ■Product Condition Currently working. The battery was replaced for the listing. Time setting operations were also performed without any problems. Regarding the original function of "blood pressure measurement," we have not confirmed its operation due to the difficulty of guaranteeing accuracy and detailed settings. Please be aware of this. ■Detailed Specifications Brand: CASIO (Casio) Model Number: BP-1B Back Cover: STAINLESS STEEL BACK / JAPAN Y Belt: Stainless Steel Thank you for viewing. Thank you in advance.