Skip to content
The Seiko Guy
  • Home
  • Grand Seiko
    • Vintage Grand Seiko
    • Grand Seiko Spring Drive
    • Grand Seiko Movements
  • Diver’s
    • Seiko 62MAS
    • Seiko Turtle
    • Seiko SKX
    • Seiko Monster
    • Seiko Sumo
    • Seiko Samurai
    • Seiko Shogun
    • Seiko Save The Ocean
    • Zimbe
  • Guides
    • How to buy Seiko watches from Japan
    • Laurel
    • Quartz-Astron 35SQ
    • Seiko Cocktail Time
  • Archive
    • Catalogs
    • Seiko News/Sales
    • Press Releases

Seiko Y450-4090 Watch Guide

The Seiko Y450-4090 is a watch model based on the Y450 movement.

Parts List

SA9N55L250crystal
0I0110B01case back gasket
0I1950B01case back gasket

Other models with the same movement

Y450-0050
Y450-4000
Y450-4010
Y450-4020
Y450-4030
Y450-4040
Y450-4050
Y450-4060
Y450-4070
Y450-4100
Y450-4110
Y450-4130
Y450-4150
Y450-4170
Y450-4200
Y450-4210
Y450-4220
Y450-4230
Y450-4240
Y450-4270
Y450-4280
Y450-4290
Y450-4300
Y450-4310
Y450-4320
Y450-4330

About “The Seiko Guy”

Hey, nice to see you here!
My name is Andrea Secco, I’m a watch enthusiast and a Seiko collector.
I hope this website will be useful to all of you who share this passion.

Andrea Secco

  • Italiano
  • Español
  • Deutsch
  • Português
  • ไทย
  • Bahasa Melayu

Recent Posts

  • Where are Seiko watches made?
  • King Seiko VANAC
  • Seiko Lord MarvelSeiko Lord Marvel
  • Seiko WatchesThe History of Seiko Wristwatches
  • Seiko Five SportsHistory of the Seiko 5 Sports
The Seiko Guy

the_seiko_guy

The journey of a watch enthusiast into the past, present and future of Seiko. 🇮🇹🇯🇵
New colors coming for the Seiko 5 Sports “SNXS” series. #seikosnxs #seiko5sports #seiko5 #seikofive #snxs #seiko #seikowatches
New edition of the Seiko 5 Sports “Time Sonar” New edition of the Seiko 5 Sports “Time Sonar”. #seiko5sports #seikotimesonar #seiko #seikofive #seiko5 #vintageseiko
New colorways of the Seiko “Samurai” are on th New colorways of the Seiko “Samurai” are on their way. I find the green PADI edition particularly intriguing! #seikosamurai #seikodiver #prospex #seiko #diverswatch #seikowatches #diver
It seems these two new models will soon be introdu It seems these two new models will soon be introduced into the Seiko 5 Sports lineup. They house the 4R36 caliber and feature a 38.2 mm diameter with a thickness of 12.34 mm. #seiko5sports #seiko5 #seikofive #seiko #seikowatches #vintageseiko
They’re called Speedtimer, but they’re not chr They’re called Speedtimer, but they’re not chronographs. They look like Bellmatics, but they’re not alarm watches. These new models are powered by the automatic 6R55 movement, featuring a 39.5 mm diameter case, 11.95 mm thickness, sapphire crystal, and a water resistance of 20 bar. #seiko #seikospeedtimer #seikonewmodel #seikowatches #prospex
Apparently, this King Turtle model is real and wil Apparently, this King Turtle model is real and will be released soon with the reference SRPL81. #seikoturtle #seikodiver #jaws #seiko #diverwatch #seikowatches
The Seiko Turtle is one of the most iconic and bes The Seiko Turtle is one of the most iconic and best-looking dive watches ever made! Which one would you pick? 🐢 #seikoturtle #seikodiver #diverwatch #seiko #seikowatches #watches #watchcollector
Seiko Quartz Very Fine Accuracy (VFA) Suwa and Dai Seiko Quartz Very Fine Accuracy (VFA) Suwa and Daini Seikosha. #seiko #seikowatches #seikosha #seikoquartz #vintageseiko #seikoholic #seikocollector
Yellow Seiko SKXA35 Bumblebee and SSK017 GMT. #se Yellow Seiko SKXA35 Bumblebee and SSK017 GMT. #seikoskx #skx #seikossk #seikodiver #seikogmt #seiko #seikowatches #yellowseiko
Seiko Spiral and Think The Earth. #seikowatches # Seiko Spiral and Think The Earth. #seikowatches #watchesofinstagram #seikodesign #design #seiko #watchcollector #seikofam
More early center second Seikosha watches: Seiko-M More early center second Seikosha watches: Seiko-Moeris center second, New 10A center second type I and New10A center second type II. The history of the 10-ligne Seiko-Moeris center second is still unclear. #seikosha #vintageseiko #seiko #seikocollector #seikoholic #seikofam #seikomoeris
Seikosha early center second wristwatches. #seiko Seikosha early center second wristwatches. #seikosha #seikoshaprecision #vintageseiko #seikowatches #seiko #seikocollector #seikofam
Seiko Cronos WaterProof first model J13028 introdu Seiko Cronos WaterProof first model J13028 introduced in 1959. #seikowaterproof #seikocronos #j13028 #vintageseiko #seikowatches
I have restored this Seiko-Buren and believe this I have restored this Seiko-Buren and believe this is the correct silver case for this rare model from 1925. The Seiko-Buren was produced for a very short period before being quickly replaced by the 10-ligne Seiko-Moeris. #seikosha #vintageseiko #seikohistory #seiko #seikofam
Seiko Cronos J14049 and J14107 Special Finish. #s Seiko Cronos J14049 and J14107 Special Finish. #seiko #seikocronos #seikowatches #seikofam #seikocollector #j14049 #j14107 #j14107e
Load More... Follow on Instagram

This website is the work of a watch enthusiast and a collector of Seiko and Grand Seiko timepieces, and it is not affiliated with Seiko in any way.

© 2025 The Seiko Guy - Privacy Policy
Scroll back to top