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Gold-tone stainless steel 37 mm round watch with gold dial, index markers, date window, automatic movement, Hardlex crystal

Seiko

Seiko 5 Automatic SNK366K1 37mm Gold Tone Stainless Steel Watch

SKU CH-6SB3-RR5MY

Automatic 21-jewel movement in a 37 mm gold-tone stainless steel case with Hardlex crystal and 30 m water resistance

  • Watch movementAutomatic
  • Product shapeRound
  • Watch face colorGold
  • Dial markingsIndex
  • Display typeAnalog
  • Date displayDate
  • Automatic movement keeps time without a battery
  • 21 jewels reduce friction for smoother operation
  • Gold-tone stainless steel case and bracelet resist daily wear
  • Hardlex crystal protects the dial from scratches
  • 30 m water resistance handles splashes and brief immersion

What It Is

The Seiko 5 SNK366K1 is an automatic dress watch with a 37 mm gold tone stainless steel case and matching bracelet. It runs on a 21 jewel mechanical movement and shows the time with gold luminous hands and index markers. A day and date window sits on the gold dial, protected by a Hardlex crystal. The see through case back reveals the movement.

How It Fits

The fixed bezel and 30 m water resistance suit daily office wear and light splashes, not swimming or diving. A push button deployment clasp secures the bracelet without tools. The 11 mm case thickness slides under most shirt cuffs. Buyers needing a screw down crown or higher water rating for aquatic sports should look elsewhere.

Thermals Noise Power

A mechanical movement draws zero electrical power and produces no fan noise or heat. The 21 jewels reduce internal friction for consistent operation. Daily wear keeps the mainspring wound; off wrist it will stop after the power reserve depletes. No battery changes or charging cables are required.

How it compares

Measured against everything we stock in Analog & Digital Wristwatches, at today’s prices. Recalculated every night.

Price $195.99
Pricier than about 69% of the 2,679 comparable items (median $130.99).

Specifications

Product
Brand nameSeiko
Design styleDress
Product colorGold
Watch face colorGold
Item conditionNew
Display
Display typeAnalog
Size & build
Main materialGold Tone Stainless Steel
Product shapeRound
Strap materialStainless Steel
Closure typeDeployment Clasp
Bezel typeFixed Bezel
Housing materialGold Tone Stainless Steel
Case size37 mm
Watch glassHardlex Crystal
Environment & compliance
Water resistance30m
More details
Watch movementAutomatic
Dial markingsIndex
Date displayDate
Suitable forMale
Age groupAdult

Questions about this item

How thick is the case on the SNK366K1?

The case measures 11 mm thick, giving it a slim profile that slides easily under a shirt cuff.

Is the automatic movement loud enough to hear on a quiet night?

The 21-jewel automatic calibre runs silently; you will not hear a rotor or ticking sound in normal indoor conditions.

Does the bracelet arrive ready to wear or do I need tools to size it?

The gold-tone stainless-steel bracelet uses a push-button deployment clasp with removable links, so a small pin tool or watchmaker is required for adjustment.

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