CASIO Collection STANDARD F-91W-1JH Black This is the classic CASIO F-91W. The condition is very good, I think it's like new. Operation confirmed. If you have any questions, please leave a comment. The following is automatically generated by Mercari. The CASIO F-91W is a waterproof digital watch with alarm and chronograph functions. - Brand: CASIO - Model: F-91W - Color: Black - Functions: Alarm, Chronograph - Water resistance: Water resistant (WR) Thank you for viewing.