Kensington Watches
Citizen NJ0150-81X Men's Watch

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Citizen

Citizen NJ0150-81X Men's Watch

Ref. TR_NJ0150-81X

The Tsuyosa — the name means "strength" in Japanese — is Citizen's attempt to plant an automatic in the middle of the market without apology. The Caliber 8210 inside is a genuine in-house movement, 21 jewels, 40 hours of reserve, visible through a exhibition caseback that makes the point quietly rather than noisily. At 40mm the case is mainstream in size but the integrated bracelet pulls the whole thing together so that it reads as a considered object rather than an assembled one. The sunray green dial shifts as the light moves across it, going from deep forest to something almost jade-depending on the angle, which keeps it from sitting flat on the wrist the way a solid-colour dial can. The exhibition caseback is worth a moment on the wrist — the rotor spins freely visible, and for a watch at this level that is genuinely useful as a reminder to keep it moving. The deployant clasp adjusts without tools, which on an integrated bracelet matters more than it sounds.

Reference
TR_NJ0150-81X
Brand
Citizen
Case size
40mm
Case material
Stainless steel
Case shape
Round
Dial
Green
Crystal
Sapphire
Movement
Automatic
Functions
Date
Water resistance
50m
Bracelet / strap
Stainless steel bracelet
Strap colour
Silver
Clasp
Deployant clasp
Lume
Luminous
Retailer
Watch Home
Learn more about Citizen

The Shokosha Watch Research Institute began in Tokyo in 1918, and the Citizen name was given to its first pocket watch in 1924 by the then mayor of Tokyo, Shinpei Goto, who wanted a watch that would be available to ordinary citizens rather than only the wealthy. The company formally took the name in 1930.

That founding intention has held. Citizen is the largest watch manufacturer in the world by volume and is fully vertically integrated, making its own movements, cases, and electronic components.

Its most significant technology is Eco-Drive, introduced in 1976 and refined over decades. A photovoltaic cell beneath the dial converts any light — including indoor light — into stored energy, so the watch never needs a battery change. Citizen has sold well over a hundred million Eco-Drive watches, and the environmental argument is substantial: hundreds of millions of cells not discarded.

The company also produced the first analogue quartz watch with a titanium case in 1970, the first professional dive watch with an electronic depth sensor, and the Caliber 0100, an Eco-Drive movement accurate to within one second a year — the most accurate independent watch movement ever put into production.

Citizen owns Bulova, Frederique Constant, Alpina, and the movement manufacturer Miyota, whose calibres power a large share of the affordable mechanical watch market worldwide.

1918
The Shokosha Watch Research Institute is founded.
1924
The Citizen name is given to its first pocket watch.
1976
Eco-Drive light-powered technology is introduced.
2018
The Caliber 0100 achieves accuracy of one second a year.

All Citizen watches

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What the specifications mean

A mechanical watch for everyday wear.

Strengths

  • 40mm suits most wrists
  • Sapphire crystal, which resists scratching
  • Luminous hands and markers for low light

Worth knowing

  • 50m suits rain and handwashing, not swimming
Best forEveryday wear
Less suited toSwimming

Citizen NJ0150-81X alternatives

Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.

NJ0150-81X Men's Watch compared with 2 alternatives from other brands
SpecificationThis watchNJ0150-81X Men's WatchTR_NJ0150-81XRotaryRGS10081/04 1895 Automatic Black Leather Strap Watch - W13329RGS10081/04Bulova96A190 Stainless Steel Automatic Bracelet Watch - W0930096A190
Price£189£189£170
Case size40mm40mm40mm
Water resistance50m50m30m
MovementAutomaticAutomaticAutomatic
StrapStainless steel braceletLeather strapStainless steel bracelet
This watchClosely matched
  • Rated shallower

Your new watch

Frequently asked questions, and things you should know about this watch

Can I swim with it?

Showering yes, swimming no. 50m covers splashes and brief immersion, but a swimming stroke generates well above the pressure that figure describes.

Water resistance explained

Will the glass scratch?

Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.

Sapphire, mineral and acrylic compared

Does it need a battery?

No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.

Quartz, automatic and solar compared

Is it a men's or women's watch?

Listed as men's, though at 40mm it sits in the range that suits anyone.

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