F-91W-1 Digital Watch

The resin case and band house a digital display with 12- or 24-hour timekeeping. Casio specifies a 145–200mm compatible band size and a CR2016 battery. Check wrist fit and the manufacturer water-use guidance before choosing it: the specification is water resistant, without a 5-bar or 10-bar rating. The photograph shows an F-91W-1 example from 2013; regional packaging is not shown. The Japanese official page identifies this base model as F-91W-1JH and states that the change from F-91W-1JF did not change specifications. The linked Japanese package is one F-91W-1JH watch with instructions in a blister pack; the historical photograph does not show that packaging. Check the seller’s regional warranty and delivery eligibility separately.