Seiko Prospex SPB453J1
Best for: The most watch for the money at this level
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 of water resistance, sapphire, a 40mm case at 46.4mm lug-to-lug and a 6R55 running 72 hours — this is a specification sheet that reads like a watch costing several times more, and Seiko publishes what servicing the 6R family costs before you buy it.
The 20mm lug width means straps stay a commodity forever. If you want one watch, want it to survive anything, and want to know the running cost in advance, the argument for this one is very hard to beat.
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.



