Seiko Prospex SPB453J1
Best for: The most watch here
9.6/10
Keep Score
- Crystal
- 2.5/2.5
- Serviceability
- 2.5/2.5
- Water resistance
- 1.5/1.5
- Warranty
- 1.05/1.5
- Strap standard
- 1/1
- Cost-to-keep transparency
- 1/1
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300m and a 46.4mm lug-to-lug together is unusual — depth ratings normally cost wearability, and this does not. 40mm across and 13mm thick is a properly proportioned diver.
The 6R55 runs 72 hours with a published tolerance of +25 to -15 seconds a day, in Seiko's published $296 overhaul band. The clasp extender is the detail that says Seiko still expects this one to be dived.
300m and a 46.4mm lug-to-lug in the same watch is unusual. The extender in the clasp is the detail that says Seiko still expects this one to be dived, not just worn.
| Movement | Seiko 6R55, automatic with manual winding, 24 jewels, +25/-15 sec per day |
|---|---|
| Power reserve | 72 hours |
| Case | 40mm stainless steel |
| Lug-to-lug | 46.4mm |
| Thickness | 13mm |
| Lug width | 20mm |
| Crystal | sapphire |
| Water resistance | 300m |
| Warranty | 3 years |
Specifications read from Seiko Watch Corporation product page, SPB453J1.



