miniature casio watch rings are small enough to fit around fingers

the miniature casio watch rings feature a digital or analog display, dial, and even a three-layer glass structure.

Hands-On: The IWC Portugieser Automatic 40 - Hodinkee

The Digital Watch: A Brief History

Finger Ring Watch

Ladies' Bering Ceramic Crystal Two-Tone Watch with Black Dial (Model: 11440-166)

Casio Watch Rings are a tiny wearable tribute to the Japanese timekeeping legacy - Yanko Design

Men's Casio G-Shock Classic Brown Strap Watch with Brown and Black Dial (Model: GA2000-5A)

Casio Watch Rings are a tiny wearable tribute to the Japanese timekeeping legacy - Yanko Design

fully functional miniature luxury watches tell time and date at the shirt's cufflinks

Casio Men's Pro Trek PRG-270-1 Tough Solar Triple Sensor Multifunction Digital Sport Watch : Clothing, Shoes & Jewelry

Casio Protrek Tough-Solar PRW3500-1 Multi-Band 6 Triple Sens