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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallSeiko’s U.S. listings show the King Seiko SJE103, SJE105 and SJE107 as KSK models with the same published core specifications and a listed price of $3,300 each. The official pages establish shared dimensions, movement, water resistance and 19 mm lug spacing; they do not provide enough reliable detail to compare the models’ dial appearance.
What are the King Seiko SJE103, SJE105 and SJE107?
All three are King Seiko KSK references, according to Seiko’s U.S. product pages. Seiko’s collection page situates KSK in a design lineage dating to 1965: that is the heritage of the original KSK, not a confirmed launch date for these three references. Seiko describes the collection as combining “The lasting design values of 1965. The technology and engineering of today.” (Seiko KSK collection.)
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
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Seiko Men's SNXL72 Seiko 5 Automatic Gold-Tone Stainless Steel Bracelet Watch with Patterned Dial | $198.45 | Buy on Amazon |
| 2 |
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SEIKO 5 Automatic Black Eastern Arabic Dial Men's Watch SNKP21J1 | $199.01 | Buy on Amazon |
The official listings reviewed do not establish when the SJE103, SJE105 or SJE107 was first announced or became available. Their current presence on Seiko’s site should not be read as evidence of an initial release date.
Shared specifications
Seiko publishes the same core specifications for all three U.S.-listed models:
#1 Best Overall
- Gold-tone bracelet watch with exhibition back featuring patterned dial and day/date window
- 37 mm stainless steel case with Hardlex dial window
- Automatic self-wind movement with analog display
- Gold-tone stainless steel bracelet with fold-over clasp
- Water resistant to 30 m (99 ft): In general, withstands splashes or brief immersion in water, but not suitable for swimming.
| Specification | SJE103 | SJE105 | SJE107 |
|---|---|---|---|
| Movement | Caliber 6L35; automatic with manual winding | Caliber 6L35; automatic with manual winding | Caliber 6L35; automatic with manual winding |
| Stated precision | +15 to −10 seconds per day | +15 to −10 seconds per day | +15 to −10 seconds per day |
| Power reserve | Approximately 45 hours | Approximately 45 hours | Approximately 45 hours |
| Jewels | 26 | 26 | 26 |
| Case material and dimensions | Stainless steel; 38.6 mm diameter, 10.7 mm thick, 45.8 mm lug-to-lug | Stainless steel; 38.6 mm diameter, 10.7 mm thick, 45.8 mm lug-to-lug | Stainless steel; 38.6 mm diameter, 10.7 mm thick, 45.8 mm lug-to-lug |
| Crystal | Box-shaped sapphire, inner-surface anti-reflective coating | Box-shaped sapphire, inner-surface anti-reflective coating | Box-shaped sapphire, inner-surface anti-reflective coating |
| Distance between lugs | 19 mm | 19 mm | 19 mm |
| Water resistance | 5 bar | 5 bar | 5 bar |
| Magnetic resistance | 4,800 A/m | 4,800 A/m | 4,800 A/m |
| Other listed features | Date display; stop-seconds function; push-button deployment clasp; screw case back | Date display; stop-seconds function; push-button deployment clasp; screw case back | Date display; stop-seconds function; push-button deployment clasp; screw case back |
| Weight | 130 g | 130 g | 130 g |
| Listed U.S. price | USD 3,300 | USD 3,300 | USD 3,300 |
These are Seiko-published attributes, not results from independent testing. The stated precision is the manufacturer’s listed specification; it is not a guarantee that every individual watch will maintain that rate in all conditions. See Seiko’s official pages for the SJE103, SJE105 and SJE107.
How do the SJE103, SJE105 and SJE107 differ?
On the published comparison points—case dimensions, movement and reserve, water and magnetic resistance, lug spacing, weight and U.S. listed price—the three product pages give the same values. The page text available for this comparison does not reliably establish model-specific dial colors or other visual distinctions, so it is not possible to make a verified appearance comparison from those listings alone.
Rank #2
- Seiko 5 Automatic Black Arabic Dial Men's Watch SNKP21J1
What is the listed U.S. price?
Seiko lists each model at USD 3,300 on its U.S. product page. This is the listed U.S. price, not a promise that every retailer currently charges that amount or has stock. Prices and availability can change. Seiko’s U.K. listings show GBP 2,930 for the SJE103J1 and SJE105J1, while its Canadian SJE105J1 page lists CAD 4,625; these are separate regional listings and should not be treated as direct currency conversions.
What strap width do they use?
Each model has a listed 19 mm distance between the lugs, the relevant width when looking for a replacement strap. Confirm a third-party strap’s fit and attachment details before buying; the lug measurement alone does not establish compatibility with every strap.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
