Watch that never needs servicing?

[RichardHarris123]

Do I remember correctly?  Years ago, I seem to remember a Japanese watch that was filled with oil and ment to last forever. Was I dreaming? 

[watchweasol]

Hi Richard , not dreaming there were a few oil filled watches several on UTube, didn’t seem to catch on though.      Cheers

[RichardHarris123]

Date?  I'm guessing 35 or 40 years ago. 

[JohnR725]

11 hours ago, RichardHarris123 said:

Japanese watch that was filled with oil and ment to last forever.

There are other oilfield watches not necessarily meant to last forever like for instance this

https://www.ablogtowatch.com/ressence-type-5-oil-filled-dive-watch/

Or these

https://www.watchbuys.com/store/pc/Sinn-Oil-Filled-c55.htm

Or how about a DIY project. The other problem with his choice is being a quartz watch be going to have to eventually open it and change the battery.

https://youtu.be/2a7w9oD6w7Y

Oh looks like it it's been discussed before in a way.

https://www.watchrepairtalk.com/topic/13925-how-to-drown-a-watch-movement-in-silicone-oil/

11 hours ago, RichardHarris123 said:

Years ago, I seem to remember a Japanese watch that was filled with oil and ment to last forever. Was I dreaming? 

Then casually and not finding a watch by this description but it's probably can do not quite using the right search terms. It's quite conceivable is somebody has done a watch for not requiring servicing but it would present all sorts of interesting challenges. Quartz watches easy for the most part although I do wonder about the DIY how well they really work. It is a mechanical watch it have to keep the balance wheel out of the oil otherwise wouldn't rotate at all. Same with an automatic automatic I doubt would work of his filled with oil.