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Deal.ai › Seiko
Seiko
Men's Prospex Watch (SRPF77K1)
Seiko

Men's Prospex Watch (SRPF77K1)

4.9(144 ratings)

Best price now

$499.00at Spot On TimesChecked 49 min ago

17% under what the other stores charge

Compared across 6 stores. Prices are checked against each store and labelled with when.

Visit Spot On Times

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Price facts

  • Lowest price today: $499.00 at Spot On Times (checked Nov 11, 2026).
  • Checked at 6 stores.

Our take on the Men's Prospex Watch (SRPF77K1)

The Seiko Prospex SRPF77K1 is a 45mm automatic dive watch with a blue dial, silicone strap and 200m water resistance. It runs the 4R36 movement with day-date and about 41 hours of power reserve, and it uses sapphire crystal, which is a step above the Hardlex on many cheaper Prospex models. The 45mm case and 13mm thickness make it a big, heavy-feeling watch on smaller wrists. It suits divers and desk divers who want a rugged ISO-style tool watch with real water resistance, and it competes with the Seiko Samurai and Turtle lines as much as with other brands.

Best forDivers and snorkelers who want 200m water resistanceBuyers who prefer automatic movements over quartzPeople with larger wrists (7 inches and up)Fans of blue-dial dive watches with a rotating bezel
Pros
  • Sapphire crystal resists scratches better than Hardlex
  • 4R36 movement offers hacking and hand-winding
  • 200m water resistance with a screw-down crown and case back
  • Luminous hands and markers stay readable in low light
  • Unidirectional bezel with a firm, clicky action
Cons
  • 45mm case and 13mm thickness wear large and heavy
  • 4R36 accuracy is modest, often within -20 to +40 seconds a day
  • Silicone strap collects dust and can feel stiff at first
  • No bracelet included, and 22mm lugs limit some strap choices

Men's Prospex Watch (SRPF77K1) prices at every store

  • Spot On TimesNew

    In stockReturn policy

    $499.00Checked 49 min ago
    Visit Spot On Times
  • ZeuskicksNew

    In stockPriced in INR (₹55,250.00)Return policy

    $589.71Checked 49 min ago
    Visit Zeuskicks
  • WalmartNew

    In stockSold by BOOKSANDPENS

    $599.00Free shippingChecked 50 min ago
    Visit Walmart
  • eBayNew

    In stockSold by cb_watches

    $579.00+ $49.99 shippingChecked 50 min ago
    Visit eBay
  • woweyeNew

    In stockShips from India · duties may apply

    $693.34+ $35.20 shippingChecked 50 min ago
    Visit woweye
  • ELITE TIMEPIECEHK-HONG KONGNew

    In stockShips from abroad · priced in HKD (HK$5,878.00) · duties may applyReturn policy

    $749.21Checked 49 min ago
    Visit ELITE TIMEPIECEHK-HONG KONG

Store links may earn us a commission.

Men's Prospex Watch (SRPF77K1) price history

Lowest price we've seen: $579.00 on Nov 11 at eBay. Tracked across 3 stores since Nov 11.

What reviewers say

  • 4.9 / 5144 ratings

Owners rate it very highly, praising the blue dial, the sapphire crystal and the solid dive-watch build. Complaints center on the large size and the movement's average timekeeping rather than on reliability.

What people mention
  • SizeCriticisedOwners say the 45mm case and 13mm thickness feel large and top-heavy on smaller wrists.
  • CrystalPraisedBuyers like that sapphire crystal is fitted instead of Hardlex, calling it a real upgrade.
  • AccuracyMixedSome owners report noticeable daily drift from the 4R36, while others find it acceptable for an automatic.
  • DialPraisedThe blue dial and luminous markers get consistent praise for looks and legibility.
  • StrapMixedThe silicone strap is comfortable once broken in but collects dust and feels stiff when new.
  • BezelPraisedReviewers describe the unidirectional bezel as firm and precise with clear clicks.

About the Men's Prospex Watch (SRPF77K1)

The Seiko Prospex SRPF77K1 is a men's analog dive-style watch with a blue dial. It has a stainless steel case and a silicone strap that closes with a buckle clasp. The case measures approximately 45mm across and 13mm thick, and the lug width is approximately 22mm.

It runs on the automatic Caliber 4R36 movement with 24 jewels and a power reserve. The dial shows the day and date, and the hands and markers are luminous. A sapphire crystal covers the dial.

The watch has a unidirectional rotating bezel, a screw-down crown and a screwed case back. It is water resistant to 200 meters.

Brand
Seiko
Model
SRPF77K1
Movement
Automatic, Caliber 4R36, 24 jewels
Case
Stainless steel
Strap
Silicone, buckle clasp
Crystal
Sapphire
Dial
Blue, analog, day and date display
Water resistance
200M
Dimensions
Case approx. 45mm diameter, 13mm thick; 22mm lug width

Specifications

color
Blue

Questions and answers

Is the SRPF77K1 good for actual diving?
Yes. It has 200m water resistance, a screw-down crown and case back, and a unidirectional bezel, which is the standard dive-watch setup. It is rated for recreational diving, not saturation diving.
How does it compare with the Seiko Samurai?
Both use the 4R36 and 200m rating, but the Samurai has angular case lines and usually comes on a bracelet. The SRPF77K1 has a rounder case, a silicone strap and sapphire crystal.
Does the 4R36 movement hack and hand-wind?
Yes. The 4R36 stops the seconds hand when you set the time and can be wound by hand, which older 7S26 movements could not do.
Will it fit a small wrist?
It will fit, but the 45mm case and 13mm thickness look large on wrists under about 7 inches. Try it on if you can before buying.
What comes in the box?
The watch on its silicone strap, a Seiko presentation box and paperwork. No extra bracelet or tools are included.
Is the crystal sapphire or Hardlex?
Sapphire. That makes it more scratch-resistant than the Hardlex used on many lower-priced Prospex models.
Where is the Men's Prospex Watch (SRPF77K1) cheapest?
At Spot On Times, for $499.00, 17% under what the other stores charge, as of our latest check.
What do buyers say about the Men's Prospex Watch (SRPF77K1)?
Rated 4.9 out of 5 from 144 ratings.
Where can I buy the Men's Prospex Watch (SRPF77K1)?
6 stores we checked sell it, including ELITE TIMEPIECEHK-HONG KONG, Spot On Times, Zeuskicks, Walmart, eBay.

Stores we've priced the Men's Prospex Watch (SRPF77K1) at

  • Walmart deals and prices

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