Tokunaga on: The materials of Seiko 1000m diver's watch - Seiko & Citizen Watch Forum Japanese Watch Reviews, Discussion & Trading
LinkBack Thread Tools
Old 03-04-2010, 04:53 PM   #1 (permalink)
Senior Member
Join Date: Mar 2010
Location: Denmark
Posts: 1,128
Points: 2 (+)
Default Tokunaga on: The materials of Seiko 1000m diver's watch

Authored by Tokunaga


I am curious as to why Seiko uses a base metal for the ceramic coated housing cover for this watch. Why is this a base metal vice stainless steel or titanium?. Does the base metal help with anti magnetic properties for this watch? Also What type of metal is the base metal? How is the ceramic coating applied over the base metal? Is the ceramic coating a powered ceramic paint? Can you give me some information about this.
Thank You In Advance


Hello Jima-san,

The material of the protect cover (outer case body) of Seiko 1000m diver's watch is not coating of ceramics but the solid material of ceramics.

In addition, the expression with "base metal" in the marking of a case is used when the parts which carried out the golden color mean that it is not "gold", and the materials of the base metal are such as brass, nickel silver, stainless steel, pure titanium and titanium alloy etc.

These materials are non-magnetic materials. The duty of anti-magnetic property was not achieved by those parts, but the anti-magnetic plate (please refer to the cross section drawing below) made of pure iron on the inner case body has achieved the duty of anti-magnetic property.

I summarized the materials and surface treatment of those parts on the following image. Please refer to in detail.

I hope this helps you.

Sincerely yours,

Ikuo Tokunaga

The materials and surface treatment

The cross section drawing

Ikuo Tokunaga

Picture credit: Seiko
"That a wristwatch is a small celestial theater. It is a small sky. A device for the measure of shadows." -Gabriel Gudding

Harry, Denmark is offline   Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Seiko & Citizen Watch Forum Japanese Watch Reviews, Discussion & Trading forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tokunaga on: 150m diver's watches (crystals) of 61 cal. and 63 cal. Harry, Denmark The Tokunaga Archives 2 06-14-2014 05:47 PM
Tokunaga on: Explanation about the materials of watch glass Harry, Denmark The Tokunaga Archives 1 03-04-2010 05:06 PM
Tokunaga on: Lubrication of a wrist watch Harry, Denmark The Tokunaga Archives 0 03-04-2010 04:51 PM
Tokunaga on: When the crown is screwed into the watch after setting... Harry, Denmark The Tokunaga Archives 0 03-04-2010 01:47 PM
Tokunaga on: Historical stuff about 6306/6309 150m diver's watches Harry, Denmark The Tokunaga Archives 0 03-04-2010 10:37 AM

All times are GMT -4. The time now is 07:19 AM.

Powered by vBulletin® Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.