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Seiko Prospex Sea PADI Automatic Diver's SRPB99
Ref. SRPB99K1 · Diver
Stock unknown
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Case
- Diameter
- 43.8mm
- Thickness
- 12.8mm
- Lug width
- 22mm
- Material
- Stainless steel
- Water resistance
- 200m
- Caseback
- Screw-back
Crystal & dial
- Dial color
- Black
- Texture
- Wave-pattern textured
- Lume
- LumiBrite on hands and indices
Movement
- Caliber
- Seiko 4R35
- Type
- Automatic
- Jewels
- 23
- Complications
- Date, Stop-seconds function
Seiko
Seiko's mid-range automatic caliber, widely used in the Presage and some Prospex lines. Features hacking and hand-winding at an accessible price point. Accuracy spec is -35/+45 seconds per day, though most examples perform well within that range.
Design language
- Case shape
- round
- Dial style
- textured
- Bezel
- rotating_unidirectional
- Bracelet
- metal_oyster
AI-detected from the product image
Market
RetailNot listed
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Closed · 30d1Asking-price history
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Retail stock & market context
Seiko on the secondhand market
+10.1%
2026 so far · +5.2% to +17.1% · 103 matched watches
In line with the index
Divers as a group: +5.6% · 369 matched watches
Year-by-year readings →Similar watches
Community
Owners widely praise the Seiko Prospex Sea PADI Automatic Diver's SRPB99 for its excellent value and refined wave dial pattern, with one reviewer noting its sharp, angular 43.8mm case wears smaller than its dimensions suggest. The 4R35 movement hacks and handwinds, and the watch keeps great time. Some owners find the 43.8mm case a bit large, though others report the short, steeply angled lugs enhance wearability. The entry-level stainless steel bracelet is considered good but not exceptional, and one owner found it difficult to resize. The dial's blue offers depth and reflectivity, though the red hash marks are seen as a drawback by one owner. Overall, owners rate the Seiko Prospex Sea PADI Automatic Diver's SRPB99 highly for its outstanding value and refined dial.
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