Seiko 5 Sports SRPD55
Best for: The sensible gym watch
8.0/10
Keep Score
- Crystal
- 1.3/2.5
- Serviceability
- 2.5/2.5
- Water resistance
- 1.1/1.5
- Warranty
- 1.05/1.5
- Strap standard
- 1/1
- Cost-to-keep transparency
- 1/1
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100m is plenty for sweat and a post-session shower, and the 4R36 is the most widely serviced mechanical caliber in the United States at a published $176 — so if it does take a hard knock, fixing it is a known cost.
42.5mm across but only 46mm lug-to-lug, on a 22mm strap width that takes any rubber or nylon strap ever made. Move it off the bracelet before the first session.
Hardlex rather than sapphire, so it will collect marks from bar contact that cannot be polished out. That is the trade for a watch cheap enough not to worry about.
The 4R36 is the most commonly serviced mechanical caliber in the United States and Seiko publishes a flat $176 price to overhaul it. That single fact does more for a twenty-year horizon than any spec on the case.
| Movement | Seiko 4R36, automatic with manual winding, 24 jewels |
|---|---|
| Power reserve | 41 hours |
| Case | 42.5mm stainless steel |
| Lug-to-lug | 46mm |
| Thickness | 13.4mm |
| Lug width | 22mm |
| Crystal | hardlex |
| Water resistance | 100m |
| Warranty | 3 years |
Specifications read from Seiko Watch Corporation product page, SRPD55.




