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Movement tier: unclassified · caliber Seiko Cal. 4R35: in-house automatic with date, 21,600bph, 41h PR, 24j; hackable, manually windable; used in Presage cocktail and style series · 41h power reserve

Also uses Seiko Cal. 4R35

Seiko Presage Cocktail Time "Mockingbird" SRPE17 Ref. SRPE17J1, silver dial, steel case
Seiko
Presage
Seiko Presage Style 60s SRPK15 Ref. SRPK15J1, green dial, steel case
Seiko
Presage
Medium-large: suits wrists 6.5 in+ (16.5 cm+)
40.8 mm case. Wears confidently on average to larger wrists. May overhang on slender builds.

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Authentication

Identify the crystal type first (Hardlex vs sapphire by generation), then verify the sunray dial shifts color dramatically under moving light.

Known issues in the market
  • Early SSA345J1 variants use Hardlex crystal; later variants use sapphire. The generation must be verified, not assumed.
  • Replaced dials from other Presage references lack the sunray finish depth; any flat Cocktail Time dial is incorrect.
AreaWhat to checkWhat is correctRed flag
crystalCrystal type identificationSapphire (later variants) resists scratching with a steel tool; Hardlex (early variants) scratchesCrystal type does not match the documented generation for the specific reference number
dialSunray finish color shiftDial shifts color dramatically as the viewing angle changes under direct lightFlat matte appearance at any angle; replaced dial or counterfeit
Common legitimate replacements
  • Crystals are replaced after scratching; confirm the replacement matches the documented type for the generation.
  • Dial replacements from other Presage lines lack the sunray finish depth.
Expert resources: Seiko SSA345J1 product documentation. WatchUSeek Presage Cocktail Time review threads for crystal generation identification.

Authentication guide

Last reviewed June 2026

The SSA345 is one of the earlier Presage Cocktail Time references with a black or blue textured dial. Cal. 4R35 inside. The textured dial and applied indices are the authentication focus; the Cocktail Time sub-line is occasionally reproduced in low-cost markets because the dial design is visually striking.

Known reproduction risks

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LOW

The Cocktail Time sub-line occasionally appears in reproduction form in low-cost markets, primarily with flat-printed dials that imitate the original textured surface.

  • Flat printed dial texture instead of dimensional surface
  • Applied indices that do not sit consistently above the dial plane
  • Caseback without the correct reference number for the colorway

Dial variants by era

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EraDescriptionIdentifiers
2015 to presentBlack or blue textured dial with applied silver indices and no lume. The textured surface has a light-scatter pattern visible in direct light. Some variants are available with multiple dial colors including black, blue, and grey.
  • Black, blue, or grey textured dial with dimensional depth under magnification
  • Applied silver-tone indices
  • "PRESAGE" and "AUTOMATIC" text
  • Date window at 3
  • Sapphire crystal on the SSA345 (unlike the SRPE17 which has mineral)
  • Metal bracelet or leather strap at retail

Service part flags

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Dial

Original: Textured surface with dimensional depth. The texture is applied rather than printed. Under 10x magnification the raised texture elements should be visible as distinct three-dimensional structures.

Replacement tells
  • Flat printed texture without dimensional depth under magnification
  • Color that is inconsistent or shows application marks near the edges
  • Dial without the "PRESAGE" designation in the correct font
Crystal

Original: Sapphire crystal on the SSA345. This is a step up from the mineral crystal found in lower Presage variants.

Replacement tells
  • Mineral crystal on an SSA345, which would indicate a downgrade replacement
  • Crystal that does not sit flush with the bezel on all sides
Caseback

Original: Solid caseback with SSA345J1 reference number.

Replacement tells
  • Caseback with SRPE17 or another Cocktail Time reference number on a watch sold as SSA345
Hands

Original: Sword-style polished hands without lume fill, consistent with the no-lume dress dial.

Replacement tells
  • Hands with lume plots, inconsistent with the original dial design

Case back markings

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2015 to present
  • SSA345J1 reference number
  • "100M" water resistance designation
  • "PRESAGE" designation
  • Cal. 4R35 designation
  • Seiko S logo

Movement tells

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  • Cal. 4R35 at 21,600 bph; date-only. Hackable and manually windable.
  • Power reserve is 41 hours.
  • Any SSA345 with a 4R36 movement has a day/date complication that should not be present; the movement is non-original.
Sources: Seiko Presage Cocktail Time SSA345 product page.

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