Casio Ring Watch – Model CRW001G-9

Overview

The Casio CRW001G-9 elevates vintage design into a completely new form — a gold-tone digital ring watch crafted with Casio’s signature miniaturization technology. This innovative wearable blends jewelry-like elegance with practical everyday functions, offering a unique way to tell time right from your finger.

The stainless-steel case and bezel feature gold ion plating, giving the ring a brilliant finish while maintaining durability. Despite its compact size, the CRW001G-9 includes essential features such as dual time, 1/100-second stopwatch, LED backlight, flash alert, and a full auto-calendar. Mineral glass protects the display, and the lightweight 16 g construction ensures comfortable wear.

Designed to fit a US size 10.5 (EU U), the ring also includes size-adjusting spacers in sizes 19 (19 mm inner diameter) and 16 (18 mm inner diameter), allowing you to customize the fit for multiple fingers.

Combining the aesthetic of fine jewelry with Casio’s practicality, the CRW001G-9 stands out as a modern accessory for those wanting a bold, stylish take on timekeeping.

Key Highlights

✔ Gold ion plated stainless-steel ring watch
✔ Designed for US size 10.5 (EU U) with included spacers (sizes 19 & 16)
✔ Dual time for tracking two time zones
✔ 1/100-second stopwatch
✔ Time Flash alert (light flashes on alarm or hourly signal)
✔ LED backlight (white)
✔ Water-resistant construction
✔ Mineral glass for scratch resistance
✔ Lightweight at 16 g
✔ Approx. 2-year battery life (SR621SW)

Technical Specifications

Basic Information

• Case Size (L × W × H): 25.2 × 19.5 × 6.2 mm

• Weight: 16 g

• Case & Bezel Material: Stainless steel

• Water Resistance: Water Resistant

• Battery Life: Approx. 2 years on SR621SW

Exterior

• Glass: Mineral Glass

• Surface Treatment: Gold ion plated case

• Compatible Size:
  • Inner diameter: 20 mm
  • Circumference: 62.8 mm
  • Fits US 10.5 (EU U)
  • Includes spacers: Size 19 (19 mm inner diameter), Size 16 (18 mm inner diameter)

Watch Features

World Time

• Dual time

Stopwatch

• 1/100-second stopwatch

• Measuring capacity: 00'00"00–59'59"99

Alarm / Time Signal

• Time flash alert (daily & every hour)
  • Light may not be visible in bright lighting
  • Intended for entertainment purposes

Light

• LED backlight

• Light Color: LED White

• Note: May not be visible in bright light

Calendar

• Auto-calendar (28 days for February)

Accuracy

• Accuracy: ±30 seconds per month

Other Features

• 12/24-hour format

• Regular timekeeping: hour, minute, second, PM, month, date, day

Summary

The CRW001G-9 brings Casio’s digital heritage into a bold new format — a wearable ring watch that fuses brilliant gold styling with practical everyday functions. With dual time, stopwatch, LED light, and flash alerts, this miniature timepiece delivers convenience in a jewelry-like design that stands out as both tech and fashion.

CRW001G-9 — A modern digital timepiece reimagined as gold jewelry.

For more details, visit the official CASIO website here.

Warranty:

• The watch is covered by a warranty, providing assurance and protection for your purchase.

▶︎Processing Time & Shipping Policy
▶︎Refund policy
▶︎We only carry G-SHOCK USA products.
▶︎Unfortunately, we DO NOT ship internationally.