Description
Description
The CITIZEN REGUNO KM1-237-91 is a practical and affordable solar-powered watch designed for everyday reliability. Featuring a clean silver dial paired with a two-tone stainless steel bracelet in silver and pink gold, it offers a classic and versatile aesthetic suitable for both business and casual use. Its 37.5mm case provides a balanced size that fits comfortably on a wide range of wrists, making it an ideal entry-level timepiece.
Powered by Citizen’s Solar-Tech Caliber J800, the watch converts light into energy, eliminating the need for battery replacement while delivering an accuracy of approximately ±15 seconds per month. It offers an impressive operating time of around 8 months on a full charge, along with practical features such as day-date display, quick correction, and charge warning functions.
With 100-meter water resistance and a durable stainless steel construction, the KM1-237-91 is built for long-term daily use. Positioned within the REGUNO line, it stands out as a highly accessible JDM model that combines essential functionality, durability, and strong value for money.
Key Specifications
- Case: 37.5 mm diameter, approx. 9.1–9.5 mm thickness, stainless steel
- Bezel: Stainless steel, polished finish
- Band: Stainless steel bracelet (silver + pink gold tone), fold clasp
- Water resistance: 100m (10 ATM)
- Movement: Solar-Tech Cal. J800 (solar quartz)
- Battery/Power: Approx. 8 months on full charge
- Accuracy: ±15 seconds/month
- Display: Analog, silver dial
- Functions: Day-date display, quick day/date correction
- Special features: Charge warning, overcharge prevention
- Illumination: —
- Additional: Mineral / crystal glass
- Origin: Japan Domestic Market (JDM)
- Warranty: 1 year
- JAN/Model Code: KM1-237-91
- Release date: July 2021
Key Highlights
The KM1-237-91 stands out as a “high-value solar watch” within the entry-level segment. Unlike many budget watches, it combines solar charging, day-date functionality, and 100m water resistance, delivering a well-rounded feature set at an accessible price point.
With Solar-Tech technology, it offers a maintenance-free experience by eliminating battery replacements while maintaining stable accuracy. This makes it particularly appealing for users who want a reliable everyday watch without ongoing upkeep.
On the wrist, the moderate 37.5mm case size ensures excellent wearability, while the two-tone silver and pink gold finish adds a subtle dress element, allowing it to transition easily between business and casual settings.
Within the Citizen lineup, the REGUNO series is known for its affordability and practicality. The KM1-237-91 is one of its most balanced models, making it a strong choice for first-time buyers, daily wear users, or those seeking a dependable secondary watch.