Get a specification that identifies the movement
Ask for the movement maker and calibre or model reference where available, plus whether that identification is supported or only stated by the supplier. Broad phrases such as “automatic movement” or “Japanese movement” leave the actual mechanism unclear. If the reference is unknown, keep it unknown in the quotation.
Request the instructions for the exact version being offered. Check that the described functions match the dial, controls and movement information. A display element may be decorative, and two watches with similar cases may offer different functions. The price comparison is incomplete until the required functions are aligned.
Use three levels of verification
| Claim | Useful evidence to request | What remains outside it |
|---|---|---|
| Case and bracelet dimensions | Measurements with a stated method | Comfort on your particular wrist |
| Date or chronograph operation | A clear demonstration of the exact watch’s controls | Long-term reliability |
| Timekeeping | Recorded measurement with duration, conditions and method | A guarantee under all wearing conditions |
| Movement identity | Relevant identifying evidence or qualified inspection | Brand provenance by itself |
| Water resistance | Applicable specification and relevant test or service evidence | Permanent protection after wear, damage or service |
Fit includes more than case diameter
Ask whether the stated diameter excludes the crown. Record thickness, lug-to-lug length and the bracelet or strap range as relevant to the design. If the bracelet needs shortening, establish which links can be removed and whether the needed adjustment is within the available range.
For a watch you intend to wear under a cuff, thickness and overall shape may matter more than an appealing dial photo. Compare the proposed measurements with a watch that fits your wrist rather than guessing from a model’s wrist size. State whether spare links and adjustment parts are included.
Treat water resistance as a supported condition
Seiko’s customer guidance says water resistance can change as gaskets age or parts are affected by shock, and recommends periodic checks. Its usage table is specific guidance for its watches, not proof that an unrelated listing with a similar marking has the same capability. Source: Seiko water-resistance guidance.
For a product that must tolerate water, request the relevant specification and evidence before choosing it for that use. A case-back engraving or splash photo does not establish test conditions. Do not ask an unqualified handler to demonstrate an unsupported water claim by immersing the watch. A test request should name the method and who can perform it.
Ask what happens if the watch needs attention
Confirm who will handle a functional discrepancy, what evidence they need, and which costs or exclusions apply. Distinguish the supplier’s stated support from a manufacturer warranty; neither should be assumed from the presence of a brand name.
Before arranging shipment, ask whether the watch contains a battery and whether the proposed route accepts the actual product configuration. Do not classify every watch under a single shipping assumption. Use the shipping overview for the required parcel inputs.
Add the item to your site quote with the movement, dimensions and tests you still need confirmed. A request for inspection is not a claim that the service is available or already completed. If a decisive functional question cannot be answered, leave the purchase decision open.
Sources & scope
- Seiko water-resistance guidance ↗Manufacturer guidance on changing water resistance and appropriate checks. Its use table is not applied to unrelated watch listings. · Checked 2026-10-26