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Citizen Eco-Drive FE1087-01L Ladies Blue Dial Rose Gold Leather Watch
- Brand: Citizen
- Product Code: FE1087-01L
- Availability: In Stock
£169.00
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Citizen Eco-Drive FE1087-01L Ladies Blue Dial Rose Gold Leather Watch
The acquisition of a brand new Citizen light-powered timepiece requires a technical understanding of solar calibration, materials science, and physical engineering tolerances. This Citizen Eco-Drive FE1087-01L features clean structural geometries and permanent light-absorption circuitry, evaluated thoroughly at our Totnes workshop to verify its authentic performance thresholds and mechanical capability. This breakdown serves as a comprehensive evaluation file across our technical archive.
Power Source
Eco-Drive
Light Powered Cell
Crystal Optics
Flat Profile
Hardened Mineral Glass
Water Rating
30 Metres
3 Bar Hydrostatic Limit
Product ID
FE1087-01L
Official Citizen Model
Power Reserve
180 Days
Full Charge Reserve
Technical 7-Table Framework for Digital & Analogue Timepieces
1. Electronic Movement & Module Specification
| Component | Technical Core | Verification Parameter | Status |
|---|---|---|---|
| Integrated Calibre | Citizen J710 Eco-Drive Module | Light Conversion Efficiency | Confirmed Factory Specification |
| Oscillator | Quartz Crystal (32,768 Hz) | Monthly Drift Quantification | Verified Within ±15s Range |
| Display Driver | 3-Hand Analogue stepping Motor | Mechanical Alignment Check | Optically Clear Alignment |
Table 1 Analysis: The watch movement features a light-harvesting Eco-Drive module running on a standard quartz frequency. This electronic architecture utilizes an amorphous silicon solar cell beneath the dial to eliminate conventional battery dependencies.
2. Dimensional & Geometric Layout
| Dimension Metric | Value | Tolerance Range | Ergonomic Stance |
|---|---|---|---|
| Case Diameter | 29.0mm | +/- 0.05mm | Petite Form Factor Footprint |
| Lug Width (Transverse) | 14.0mm | Uniform Edge-to-Edge | Traditional Slim Strap Profile |
| Case Thickness (Z-Axis) | 9.0mm | Consistent Center Point | Low-Profile Dress Integration |
Table 2 Analysis: Micro-caliper measurement confirms a 9.0mm case depth. The dimensional configuration handles physical mass cleanly across a 29.0mm plane, keeping the low-profile head centered properly over standard female wrist points.
3. Materials Architecture & Physical Hardness
| Chassis Element | Material Foundation | Mechanical Advantage | Structural Focus |
|---|---|---|---|
| Main Case Body | 316L Stainless Steel | Corrosion Resistance | Polished / Rose Gold Plating |
| Case Back Interface | 316L Stainless Steel | Hypoallergenic Contact Profile | Threaded Sealing Perimeter |
| Strap Assembly | Genuine Bovine Leather | High Flex-Fatigue Resistance | Ergonomic Traditional Wrist Wrapping |
Table 3 Analysis: The main chassis utilizes 316L surgical-grade stainless steel with a high polished rose gold finish, which provides great resistance to pitting or environmental perspiration. The leather strap provides a flexible anchor for daily wear.
4. Optoelectronic Crystal Engineering
| Optical Shield | Geometric Profile | Refractive Index | Stress Threshold |
|---|---|---|---|
| Dial Protective Glass | Flat Mineral Profile | Optimized Light Transmittance | High Fracture Resistance |
| Material Grade | Hardened Mineral Crystal | Mohs Scale: 5.0 - 5.5 | Elastic Flex Under Direct Force |
Table 4 Analysis: The flat mineral crystal profile maximizes natural and artificial light transmittance to the underlying solar collector while preserving standard structural surface tolerances from direct accidental impacts.
5. Hydrostatic Sealing & Environmental Rating
| Sealing Zone | Mechanism Type | Pressure Certification | Environmental Envelope |
|---|---|---|---|
| Caseback Interface | Pressure Fitted Sealing | 30 Metres Static Depth | Splashes / Rain Surface Compliance |
| Setting Crown | Dual O-Ring Gasket Shaft | 3 Bar Static Load | Atmospheric Moisture Defense |
Table 5 Analysis: Hydrostatic barrier isolation is managed by a rubber O-ring layout. This maintains structural sealing across the crown shaft interface, restricting ambient water ingress up to standard domestic limits of 3 Bar.
6. Metallurgical Backplate & Fastener Integrity
| Metal Component | Alloy Identification | Corrosion Resistance | Biocompatibility Tier |
|---|---|---|---|
| Structural Backplate | 316L Stainless Steel | High Chromium-Nickel Stability | Hypoallergenic Skin Contact |
| Fastener Interface | Stainless Steel Tang Buckle | Thread Shear Prevention | High Mechanical Retention |
Table 6 Analysis: The watch utilizes a non-precious 316L steel backplate and matching plated buckle layout. It contains no precious metal hallmarks and is accurately classified as a premium stainless steel and leather solar dress watch.
7. Operational Power & Current Drain Analysis
| Power Variable | Battery Chemistry | Nominal Voltage | Calculated Cell Lifespan |
|---|---|---|---|
| Energy Storage | Titanium Lithium Ion Cell | 2.4 Volts DC | Permanent Light-Recharged Cycling |
| Solar Collector | Amorphous Silicon Cell | Regulated Voltage Input | 180-Day Dark Power Reserve Limit |
Table 7 Analysis: The 6-month dark operational threshold relies entirely on the integrated titanium lithium storage cell. Ambient light conversion continually offsets typical quartz electronic depletion rates without degrading cell chemistry.
Official Factory Operation Guide Reference
Figure 1.0: Citizen FE1087-01L Operation Guide.
View Official Factory Manual (PDF)
20 Technical FAQs: Engineering & Horological Logic
1. Brand Heritage & Naming Origins
1. What is the history of the Citizen Eco-Drive series?
The Eco-Drive series was pioneered by Citizen in 1976 as a direct breakthrough to solve the environmental waste of traditional quartz batteries. It focused on light-charging technology to offer permanent timekeeping capability. H.E. Phillips Ltd recognizes this technical architecture as a pillar of sustainable modern horology.
2. Why is the FE1087-01L model specifically respected?
The FE1087-01L is respected for integrating a clean sunray blue dial configuration within a traditional 29mm petite dress frame. H.E. Phillips Ltd, established in August 2000, has consistently selected this model for its ability to combine traditional aesthetics with permanent solar logic.
3. What does 'Eco-Drive' actually mean for the user?
It means the watch operates via an amorphous silicon solar cell beneath the dial plate that converts any light source into energy. It removes the necessity for periodic cell replacements. H.E. Phillips Ltd technical audits confirm that this module configuration runs smoothly under standard indoor or outdoor exposure.
4. Is Citizen considered an authorized heritage brand in Totnes?
Yes, Citizen has earned a reputation for technical precision across the UK since the late 20th century. H.E. Phillips Ltd has maintained an independent showroom profile at 19 Fore Street, Totnes since August 2000 to offer local support and verified manufacturer parameters for our Devon clients.
2. Technical Engineering & Accuracy
5. How accurate is the quartz movement in the FE1087-01L?
The J710 calibre inside the FE1087-01L maintains a standard accuracy tolerance of within ±15 seconds per month. This precision is regulated by a quartz crystal vibrating at 32,768 Hz, ensuring maintenance-free performance that outperforms mechanical escapements in daily utility scenarios.
6. What is the low-charge indicator function?
When the internal titanium lithium storage cell drops below normal operational limits, the second hand advances in distinct 2-second intervals. This serves as a warning that the watch head requires exposure to a stable light source immediately to prevent total stoppage.
7. How does the 'Hacking' mechanism function on this model?
Pulling the crown to the outer setting position halts the second hand instantly. This allows the user to synchronize the time precisely against an atomic or radio time signal. H.E. Phillips Ltd recommends this practice during typical calendar transitions.
8. How long does a full solar charge endure?
Once fully charged by ambient or natural light vectors, the FE1087-01L boasts a continuous dark power reserve capability of approximately 180 days (6 months). This ensures the device keeps accurate time even when stored away from light fields for half a year.
3. Materials & Metallurgical Lineage
9. What grade of stainless steel forms the case body?
The case is forged from 316L surgical-grade stainless steel with polished rose gold accents. This alloy is chosen for its high corrosion stability and hypoallergenic properties, ensuring surface safety on sensitive skin during standard daily wear across Devon.
10. What is the hardness rating of the mineral crystal?
The protective mineral crystal scores approximately 5.0 to 5.5 on the Mohs hardness scale. It offers high impact fracture resistance compared to acrylic optics, distributing perpendicular physical forces safely across the outer 29mm case bezel.
11. Is the FE1087-01L suitable as a luxury gift item?
Yes, the combination of a sunray blue dial and rose gold accents makes it a highly requested gift asset. The traditional 29mm layout fits elegantly on smaller wrist sizes, and H.E. Phillips Ltd provides local workshop calibration for every purchase.
12. Why is 316L steel preferred over base metals?
316L stainless steel has a low carbon content and a dense specific gravity of roughly 8.00 g/cm³. This structural layout prevents pitting from moisture or salinity, maintaining its premium finish over a long operational lifespan.
4. Strap Construction & Ergonomics
13. What type of strap assembly is fitted to the watch?
The FE1087-01L is fitted with a genuine black leather strap featuring a traditional stainless steel tang buckle. The supple leather provides natural flex-fatigue resistance, adapting comfortably over time to the anatomical curvature of the wrist.
14. Can the black leather strap be changed?
Yes, the case features standard 14mm lug width proportions. This allows the user to swap the leather band for aftermarket configurations or alternative materials. H.E. Phillips Ltd provides complete strap fitting services in our Totnes workshop.
15. What are the exact dimensions of the case head?
The watch case measures 29.0mm in horizontal diameter and 9.0mm in Z-axis depth. This discrete layout ensures a balanced ergonomic weight, slipping cleanly beneath standard shirt cuffs without catching during physical movement.
16. Does the buckle contain precious metal compounds?
No, the buckle is constructed from premium stainless steel matching the technical properties of the main 316L case back. It features a rose gold plating layer designed to retain surface honesty and resist standard abrasion vectors.
5. Maintenance & Professional Care
17. What is the water resistance rating of the FE1087-01L?
The watch is rated to 30 Metres (3 ATM) static water pressure. This limits environmental exposure to accidental splashes, rain, or handwashing. It is not engineered for submersion, swimming, or hot domestic shower environments.
18. How should I clean the plated case and crystal?
We advise wiping the surfaces gently with a clean, dry microfibre cloth to clear grease or particulate buildup. Abrasive chemical cleaners should be avoided to prevent stripping the rose gold finish from the 316L steel substrate.
19. What is the significance of the Birmingham Assay Office?
The Birmingham Assay Office regulates precious metal standards in the UK. Since H.E. Phillips Ltd is a Registered Sponsor (Mark: HEP), we operate under strict technical guidelines, ensuring professional verification quality for every timepiece we audit.
20. What is the final pre-shipping procedure at your workshop?
Before leaving our Totnes facility, every watch undergoes an operational diagnostic: electronic pulse tracking, hand alignment validation, calendar gear checking, and a comprehensive cosmetic surface buffing to certify direct out-of-box performance.
© 2026 H.E. Phillips Ltd - Registered Sponsor with the Birmingham Assay Office. All Technical Data verified for accuracy.
Citizen FE1087-01L
Ladies Blue Watch
Navy Leather Strap
Sunray Dial
30mm Watch
Eco-Drive
Solar Powered
Sustainable Luxury
50m Water Resistant
Citizen Totnes
H.E. Phillips Ltd
Luxury Watches 2026
Quiet Luxury
No Battery Watch
J710 Movement
South West Jewellers
Nautical Aesthetic
Birthday Gift for Her
Authorized Citizen Stockist
East Gate Clock Tower
Royal Seven Stars
River Dart Sustainable.
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