The Casio CRW001G-9 takes everything we love about classic square Casio digitals and shrinks it into a full-metal ring you wear on your finger. Think G-Shock-adjacent geometry, but rendered in bright gold IP over stainless steel, with a tiny six-digit LCD tucked into a 25.2 × 19.5mm case that barely rises 6.2mm off your hand. It’s part watch, part jewelry, and very much a conversation starter. 

Despite the playful form factor, this is still a proper Casio. You get dual time, 1/100-second stopwatch, daily alarm, auto-calendar, 12/24-hour format, and a pulsing “flash” light that glows at set times or on the hour. A white LED backlight keeps the display legible in low light, while mineral glass and everyday water resistance make it ready for real wear, not just desk shots. 

Fit is handled smartly, too. The ring ships in size 22 (roughly US 10.5) with included spacers to step down to sizes 19 and 16, so a wide range of wrists—well, fingers—are covered. A two-year SR621SW battery and featherweight 16g build round out a tiny, over-engineered object that feels like peak Casio: fun, functional, and just a little bit wild.