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Deal.ai › Seiko › Seiko Men's Watches
Seiko
Seiko Men's 21.2 mm Stainless Steel Automatic Day-Date Wristwatch, Silver, SNK355K1

Seiko Men's 21.2 mm Stainless Steel Automatic Day-Date Wristwatch, Silver, SNK355K1

4.3(16 ratings)

Best price now

$179.99at WalmartChecked 13 h ago

Compared across 4 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Best price today: $179.99 at Walmart (checked Nov 13, 2026).
  • Checked at 4 stores.

Our take on the Seiko Men's 21.2 mm Stainless Steel Automatic Day-Date Wristwatch, Silver, SNK355K1

The Seiko 5 SNK355K1 is a compact stainless steel automatic watch with a silver dial, day-date window at 3 o'clock and a matching steel bracelet. Its 37 mm case wears small by modern standards, which suits slim wrists and anyone who wants a discreet everyday watch. The 7S26 automatic movement is a proven, inexpensive workhorse, but it has no hand-winding and no hacking, so it is less precise and less convenient than the 4R movements in newer Seiko 5 models. Owners treat it as a durable, low-cost entry into mechanical watches rather than a precision piece.

Best forFirst mechanical watch buyersSlim wrists and small-watch fansEveryday office and casual wearBudget-conscious automatic seekers
Pros
  • Compact 37 mm case sits flat and tucks under a cuff
  • Proven 7S26 automatic movement with day and date
  • Full stainless steel case and bracelet
  • Seiko 5 reputation for toughness at an entry level
  • Legible silver dial with simple baton markers
Cons
  • No hand-winding and no hacking seconds
  • 3 ATM rating only resists splashes, not swimming
  • 7S26 accuracy is modest and varies by position
  • Bracelet is basic with a folded-style clasp feel
  • Small case may look undersized on large wrists

Seiko Men's 21.2 mm Stainless Steel Automatic Day-Date Wristwatch, Silver, SNK355K1 prices at every store

  • CreationWatches.comNew

    In stockShips from abroad · duties may apply

    $178.00Free shippingChecked 13 h ago
    Visit CreationWatches.com
  • WalmartNew

    In stockSold by CW WATCHES

    $179.99Free shippingChecked 13 h ago
    Visit Walmart
  • Best BuyNew

    In stock

    $194.69Free shippingChecked 13 h ago
    Visit Best Buy
  • eBayNew

    In stock

    $248.89+ $79.99 shippingChecked 13 h ago
    Visit eBay

Also available at

  • WalmartCheck price at Walmart

Store links may earn us a commission. Some prices via Klarna.

Seiko Men's 21.2 mm Stainless Steel Automatic Day-Date Wristwatch, Silver, SNK355K1 price history

Lowest price we've seen: $178.00 on Nov 13 at CreationWatches.com. Tracked across 4 stores since Nov 13.

What reviewers say

  • 4.3 / 516 ratings

Owners rate it highly as a first automatic, praising the small case, the day-date and the value. Common complaints are the non-hacking movement, so-so accuracy and the light water resistance.

What people mention
  • SizePraisedOwners like the 37 mm case for fitting smaller wrists and slipping under a shirt cuff.
  • MovementMixedThe 7S26 is trusted for reliability but criticised for lacking hacking and hand-winding.
  • AccuracyCriticisedReviewers report timekeeping that drifts by several seconds a day and varies with position.
  • Water resistanceCriticisedThe 3 ATM rating is seen as splash-only, so owners avoid swimming and showers.
  • BraceletMixedThe steel bracelet is fine for the level but feels light and basic to some owners.
  • LegibilityPraisedThe simple silver dial and day-date window are easy to read at a glance.

About the Seiko Men's 21.2 mm Stainless Steel Automatic Day-Date Wristwatch, Silver, SNK355K1

This Seiko men's wristwatch has a silver stainless steel case and a matching stainless steel bracelet with a clasp closure.

Water resistance is rated at 3 ATM (30 m).

Brand
Seiko
Model
SNK355K1
Case size
37 mm
Case material
Stainless steel
Case color
Silver
Strap material
Stainless steel
Strap color
Silver
Closure
Clasp
Display
Analog
Water resistance
3 ATM (30 m)
Gender
Men's

Specifications

color
SilverSource
size
37 mmSource
Case Color
SilverSource
Movement Type
AutomaticSource
Color (Strap)

Questions and answers

Is this a good first automatic watch?
Yes. The Seiko 5 line is the standard entry point into mechanical watches, and the SNK355K1 keeps it simple with a proven movement and a small, comfortable case.
Can you wind it by hand?
No. The 7S26 movement winds only through wear, so it stops after roughly a day and a half off the wrist and must be shaken to restart.
Can I swim with it?
No. It is rated 3 ATM, which covers splashes and rain but not swimming or showering.
How does it compare with newer Seiko 5 models?
Newer Seiko 5 Sports models use the 4R36, which adds hand-winding and hacking and usually brings 10 ATM water resistance, in larger cases. The SNK355K1 is smaller and simpler.
What is the case size?
The case is 37 mm across, which is small by current standards and suits slim wrists.
Does it have a day and date?
Yes. A day-date window at 3 o'clock shows both the day of the week and the date.
Where is the Seiko Men's 21.2 mm Stainless Steel Automatic Day-Date Wristwatch, Silver, SNK355K1 cheapest?
At Walmart, for $179.99, as of our latest check.
What do buyers say about the Seiko Men's 21.2 mm Stainless Steel Automatic Day-Date Wristwatch, Silver, SNK355K1?
Rated 4.3 out of 5 from 16 ratings.
Where can I buy the Seiko Men's 21.2 mm Stainless Steel Automatic Day-Date Wristwatch, Silver, SNK355K1?
4 stores we checked sell it, including Best Buy, Walmart, CreationWatches.com, eBay.

Stores we've priced the Seiko Men's 21.2 mm Stainless Steel Automatic Day-Date Wristwatch, Silver, SNK355K1 at

  • Best Buy deals and prices
  • CreationWatches.com deals and prices
  • Walmart deals and prices

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Silver
Source
Closure
ClaspSource
Display Type
AnalogSource
Watch Strap Material
Stainless SteelSource
Functions
DateSource
Gender
MaleSource
Case Material
Silver, Stainless SteelSource
Water Protection
3 ATM (30m)Source
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