The CITIZEN Eco-Drive Calibre A060 38.3mm Blue Washi Dial [AQ4100-57M]

The Citizen AQ4100-57M from The CITIZEN collection is a refined pursuit of regulated precision and enduring performance.

At its core beats the Eco-Drive Calibre A060, a solar-powered movement individually regulated to maintain an exceptional ±5 seconds per year — a standard that exceeds typical quartz expectations. Precision begins long before assembly: only the most stable crystal oscillators are selected after a six-month observation period to ensure consistent long-term performance. After assembly, each movement is retested to verify it meets Citizen’s exacting standards.

To support accuracy through environmental variations, the A060 integrates an advanced temperature compensation system. Internal temperature is measured 1,440 times per day in 0.1-degree increments, enabling automatic real-time correction when conditions change — a key element in stable quartz regulation.

Citizen’s proprietary Eco-Drive technology continuously converts natural or artificial light into stored energy, eliminating battery replacement and providing approximately 1.5 years of autonomy when fully charged.

Beyond regulation and energy sustainability, the A060 incorporates intelligent systems for long-term stability:

• Shock Detection System protects movement alignment after impact

• Automatic Hand Position Adjustment preserves visual precision

• Overcharging Prevention Function regulates stored energy

• Insufficient Charge Warning Function alerts when reserves are low

• Energy Saving Function conserves power when light is limited

• Time Difference Correction enables seamless hour adjustment

• Instant Date Change ensures crisp midnight transitions

• Perpetual Calendar automatically accounts for month-length variation and leap years

Each The CITIZEN timepiece is assembled in a dedicated workshop in Nagano, Japan, where master craftsmen known as Meisters oversee final regulation and refined finishing.

The 38.3mm case and integrated bracelet are crafted from Super Titanium™, a proprietary alloy significantly lighter and more scratch-resistant than stainless steel. A dual spherical sapphire crystal protects the vibrant blue dial, which features applied indices and hands executed with disciplined restraint — a visual expression of measured precision.

The AQ4100-57M is not a conventional quartz watch. It is a regulated solar precision instrument engineered for stable performance, environmental compensation, and refined execution.

Technical Specifications

Model: AQ4100-57M
Collection: The CITIZEN

? Movement & Regulation

Calibre: Eco-Drive A060 (Solar Powered)
Accuracy: ±5 seconds per year
Power Reserve: Approximately 1.5 years when fully charged

Crystal Oscillator Selection:
Only rigorously tested oscillators following a six-month stability observation period.

Temperature Compensation System:
Internal temperature measured 1,440 times per day and automatically corrected in 0.1-degree increments.

Solar Energy Conversion:
Continuously converts light into stored energy — no battery replacement required.

⚙ Stability & Intelligent Functions

Power Reserve Indicator
Overcharging Prevention Function
Insufficient Charge Warning Function
Energy Saving Function
Shock Detection System
Automatic Hand Position Adjustment
Time Difference Correction
Instant Date Change
Perpetual Calendar

? Case & Construction

Case Size: 38.3 mm
Material: Super Titanium™
Crystal: Dual Spherical Sapphire Crystal
Dial: Blue with applied indices
Bracelet: Super Titanium™ bracelet with fold-over clasp and push button
Water Resistance: WR100 / 10Bar / 333ft

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