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Stainless steel automatic watch with yellow dial and matching bracelet

Citizen

Citizen Tsuyosa Yellow Dial Automatic NJ0150-81Z 40mm 50m 8210 21 Jewels

SKU CH-ZTK4-48KNM

A 40 mm stainless-steel automatic watch with a yellow dial, sapphire crystal and 50 m water resistance, driven by the 8210 calibre with 21 jewels

  • StyleDress
  • MaterialStainless Steel
  • MovementAutomatic
  • ShapeRound
  • Dial ColorYellow
  • Dial MarkersIndex
  • Automatic 8210 movement runs without a battery
  • Sapphire crystal resists everyday scratches
  • 50 m water resistance handles splashes and rain
  • 40 mm stainless-steel case fits most wrists
  • Yellow dial with index markers adds a bright accent

Citizen Tsuyosa Yellow Dial Automatic Watch

The Citizen Tsuyosa NJ0150-81Z is a men's dress watch with a 40.00 mm stainless steel case and matching bracelet. It runs on the automatic Caliber 8210 movement with 21 jewels and displays the time on a yellow dial with index markers. A date window and sapphire crystal complete the analog display.

Upgrade from quartz or entry-level automatics

This model replaces battery-powered quartz watches or basic mechanical pieces with a self-winding movement that charges through wrist motion. The sapphire crystal offers superior scratch resistance compared to mineral glass found on lower-tier watches. The jump is worth it for buyers who want a durable, tool-free bracelet adjustment via the deployment clasp.

Practical limits of 50 m water resistance

The 50 m rating suits daily hand-washing, rain and light splashes but is not rated for swimming, diving or high-pressure water jets. The fixed bezel provides no elapsed-time tracking for underwater use. Owners should avoid operating the crown or pushers while wet to maintain the seal integrity.

Highlights

  • Automatic 8210 movement runs without a battery
  • Sapphire crystal resists everyday scratches
  • 50 m water resistance handles splashes and rain
  • 40 mm stainless-steel case fits most wrists
  • Yellow dial with index markers adds a bright accent

Specifications

BrandCitizen
StyleDress
MaterialStainless Steel
MovementAutomatic
ShapeRound
Dial ColorYellow
Dial MarkersIndex
DisplayAnalog
DateDate
Band MaterialStainless Steel
FastenerDeployment Clasp
GenderMale
ConditionNew
BezelFixed Bezel
Case MaterialStainless Steel
Case Thickness40.00 mm
CrystalSapphire Crystal
Water-Resistant50m
Special FeaturesSapphire Crystal,Deployment Clasp,Date Display

Questions about this item

What case diameter does the 40.00 mm Citizen Tsuyosa NJ0150-81Z require for a strap change?

The watch has a 40.00 mm stainless steel case with integrated lugs; measure the lug width directly before ordering a replacement strap.

How do I set the date on the 8210 automatic movement without damaging the mechanism?

Pull the crown to the first position and turn clockwise; avoid changing the date between 9 pm and 3 am when the date gear is engaged.

When will the sapphire crystal or 21‑jewel movement need professional service?

Expect a full movement clean, lubrication and seal check every three to five years; the sapphire crystal only needs replacement if scratched or cracked.

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