Casio w-87h that was my father's over 20 years ago. Fixed it and gave it back to him : r/casio
Men's Casio Digital Sport Watch W87H-1V
Casio W87H-1V download instruction manual pdf
Sold at Auction: Casio round black / gray plastic Alarm Chonograph mode indicator water resistant ligth iluminator 12/24 hr watch with rubber matching bracelet. On back: Casio 1536 W-87h stainless steel back