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What is the SRPB41J1?
Seiko identifies this watch as the Presage Cocktail Time SRPB41; the U.S. product page uses the regional reference SRPB41J1. Its defining visual feature is a blue dial with a pressed pattern and gloss finish. The watch is supplied on a stainless-steel bracelet.
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Seiko’s U.S. specifications list a stainless-steel case, box-shaped Hardlex crystal, and deployment clasp with push-button release. This is an automatic watch with a date display, not a quartz watch that runs on a replaceable battery.
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The 4R35 movement is automatic, so wrist movement winds its mainspring during wear. Seiko also specifies manual winding, which lets you wind it with the crown. The company lists an approximately 41-hour power reserve and 23 jewels.
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Seiko lists a stop-seconds function: when the crown is pulled out to the time-setting position, the seconds hand stops, allowing the time to be set more precisely. If the watch is left unworn long enough to run down, it will need winding and resetting before use.
What are the SRPB41J1’s dimensions and features?
| Specification | Seiko-listed detail |
|---|---|
| Movement | 4R35 automatic with manual winding; 23 jewels |
| Power reserve | Approximately 41 hours |
| Case diameter | 40.5 mm |
| Case thickness | 11.8 mm |
| Lug distance | 20 mm |
| Crystal | Box-shaped Hardlex |
| Water resistance | 5 bar |
| Weight | 135 g |
| Display and bracelet | Date display; stainless-steel bracelet |
These figures describe the watch, not how it will look or feel on a particular wrist. Case diameter alone does not account for the shape of the lugs, the bracelet, or individual preference. If wrist fit matters to you, try the watch on if possible, or compare its measurements with a watch you already find comfortable.
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The listed lug distance is 20 mm, which is a useful measurement when searching for a replacement strap. It does not guarantee that every 20 mm strap will fit: check the specific strap’s end shape, attachment, and clearance.
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What does 5 bar water resistance mean in practice?
Seiko rates the watch at 5 bar, also expressed on its U.S. product presentation as 50 meters (165 feet). That rating should not be treated as a recommendation for diving or as a promise that the watch is suitable for every water activity. The available manual guidance is cautious rather than a dive-use endorsement.
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The Seiko manual advises, “Do not turn or pull out the crown when the watch is wet.” It also says, “Do not leave moisture, sweat and dirt on the watch for a long time.” The manual notes that water resistance may lessen as seals or adhesives deteriorate or stainless steel corrodes. Follow the instructions for your watch and avoid assuming that its rating will remain unchanged indefinitely.
What does the SRPB41J1 cost?
At the time the cited pages were retrieved, Seiko’s U.S. product page displayed USD 475 and its UK page displayed GBP 370. These are region-specific page prices, not a direct price comparison or a guarantee of current availability. Check Seiko or a retailer in your destination market for the current price and stock.
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Is it a sensible first automatic?
The specifications make the SRPB41J1’s practical trade-offs clear: it offers automatic and manual winding, a date, and an approximately 41-hour reserve, while its 5 bar water-resistance rating calls for sensible care around water. Its 40.5 mm case diameter and 20 mm lug distance give you concrete dimensions to compare against watches you know.
Whether it is right for you depends on more than the spec sheet—especially how the case and bracelet fit your wrist and whether you like the dial in person. The manufacturer’s specifications establish what the watch is; they do not establish its accuracy in use, comfort for a particular wearer, or current retail availability.
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