Casio ca-50 reloj calculadora - Sold through Direct Sale - 178896381
Casio CA-53W Calculator Wristwatch - Contrary to popular belief, Marty's watch in the Back to the Future trilogy is NOT a CA-53W but a CA-50. Notice the different wristband, it's the easiest
Casio CA-503 Digital Invader Game | Liquid Crystal
Vintage Casio Ca-50 Digital Watch 1980s Back to Future Calculator WOW for sale online | eBay