Thank you for viewing. This is a solar-powered wristwatch from SEIKO. Brand: SEIKO Movement: Solar (no battery replacement needed) Dial Color: Black Belt: Stainless steel Calendar Function: Date and day display Condition: Used, with minor scratches from use (please check the photos) Operational Status: Currently working This model has a simple design, making it suitable for both business and casual wear. It's solar-powered, so it charges simply by exposure to light, making it convenient. Please purchase only if you understand that this is a used item. Instant purchase is welcome.