Moonphase Mechanism Accuracy & Drift
This page explains accuracy expectations and drift for mechanical functions. It focuses on transparent disclosure and QC verification.
Transparency principle: We disclose movement type and known limitations.
We do not exaggerate performance or use confusing jargon.
What “Accuracy” and “Drift” Mean Here
Mechanical watches have normal deviation ranges. Deviation relates to movement structure and wearing habits.
For extra functions, small differences can appear by batch. We disclose identified differences before shipment.
Why Moonphase Results Can Vary
Function behavior depends on movement structure and version choice. It can also depend on daily use and adjustment habits.
We focus on what can be verified in QC. We avoid engineering-level explanations.
Movement Options and Practical Expectations
We offer different movement choices by version and budget. We explain differences clearly and without overselling.
Asian Movements (Standard)
Asian movements are used on standard versions. They match common budget and daily wear needs.
Japanese Movements (More Stable)
Japanese movements are positioned as more stable. They suit frequent wearers who value consistency.
Swiss Movements (High-End Optional)
Swiss movements can be offered as a higher-end option. We do not claim “all Swiss” when it is not true.
Version and Batch Disclosure
We disclose factory source, batch, and upgrade points. If drawbacks exist, we do not hide them.
QC Checks Related to Moonphase and Timekeeping
QC focuses on stable function and visible build quality. QC media reflects the real watch you will receive.
Core QC Focus Points
- Timekeeping deviation check.
- Power reserve behavior check.
- Winding efficiency check.
- Seconds-hand smoothness check.
- Date alignment and index alignment checks.
- Hand alignment check.
- Function demonstration when applicable.
QC Transparency and Customer Confirmation
- Each watch is photographed individually.
- We do not use renders or edited QC images.
- Video may be provided when feasible.
- Shipment happens after customer QC confirmation.
- If needed, customers may request additional QC shots.
How We Help Reduce User-Side Errors
We provide usage assistance for time and date adjustment. This reduces mistakes for new users.
Common Support Topics
- Time and date adjustment guidance.
- Explanation of normal timekeeping deviation.
- Water-use precautions for daily wear.
Limitations and Risk Disclosure
Mechanical watch deviation is normal. Results depend on structure and wearing habits.
Some batches can have small differences. We disclose known issues when identified.
Daily-Use Water Limits
- Default water resistance is for daily splashes.
- Avoid showers and steam environments.
- Avoid swimming, seawater, and saunas.
Optional service: Paid enhanced sealing test is available.
Professional pressure test results can be provided for this service.
Warranty and Lifetime Maintenance
Warranty covers mechanical structure faults and movement issues. Non-human functional faults are included.
Warranty Period
- Two-year limited warranty from the purchase date.
Lifetime Maintenance Support
- Movement maintenance service.
- Timekeeping adjustment.
- Full watch cleaning.
- Professional lubrication and oil replacement.
- Long-term technical support with transparent pricing.
How to Use This Guide
Use this page to set expectations for function accuracy and drift. Ask for batch-based explanations when comparing versions.
