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I don't know about analog G-Shocks... but if you have something like a Grand Seiko, then it's a good idea to have it service once in a long long time. I think those use metal gears, while cheap quartz use plastic gears. G-Shocks use lots of motors, may be those are life time lubricated, but who knows. We really need a professional watchmaker for a question like that. We can argue all day but will be no use. ;-)
 
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So is it correct to say although it has moving parts, if those parts are not metal, then no service is required? Judging by the weight of the watch, it's unlikely all metal interior.
 
I dont think quartz watches need any servicing or oiling, just the occasional battery change. Im not a watch maker but i have a 20+ year old swatch thats still ticking, with the same accuracy as the day it was given to me... And thats a swatch not a g-shock.
 
There are no jewels to oil and the stresses on a quartz movement are nothing compared to a mechanical movement. I'd think the biggest threats are moisture and contaminants. Keep any gaskets greased and be careful when changing batteries to keep dust out. I've read you shouldn't store them with the crown out either. My oldest analog G's are 20 years old and are fine. Keeping fingers crossed for many more years!
 
Saw the debate of digital vs mechanical watches, got me thinking: do my analog Gs need servicing or oiling? They also have moving parts, motors and gears etc, in there, right?
They do but the few moving parts are next to nothing compared to a mechanical watch. Short answer: no, analog quartz watches don't need service or oil, even mechanical watches made by todays standards can go without servicing for decades (at least simple three hands).

cheers
 
there are quartz movements out there that can be serviced, from the likes of seiko at one end and patek at the other...
but casio's quartz movements are very basic, and motors may eventually die...
so like most entry lvl stuff they arent made to be serviced, but rather just cheaper to have them replaced.
 
If a movement has moving metal parts, which have contact with other metal parts, then in my mind, it will need lubrication.....eventually!
Moving metal parts cause friction, which in turn causes wear.
Lubrication reduces wear & friction.
Is the factory lubrication, 'for life', I doubt it, at these prices. ;-)
Without us knowing the detailed constructional details of these watches, I think it's difficult to answer.

Over on the Omega forum, a member, is a watch maker.
He said that Omega QUARTZ watches, with hands, do require servicing.
I wouldn't feel confident arguing with a watch maker and, as I've already stated, I don't know the exact movement make up of the Casio analogue watches
to argue the point.

Having three MRG's, I'm certainly not looking forward to having to have them serviced! ;-)
 
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there are quartz movements out there that can be serviced, from the likes of seiko at one end and patek at the other...
but casio's quartz movements are very basic, and motors may eventually die...
so like most entry lvl stuff they arent made to be serviced, but rather just cheaper to have them replaced.
That makes perfect sense. Especially when considering that the price of such service may come close to quartz module replacement, servicing quartz modules might be just not economical.
 
What's self lubricating and how?
Not in a literal sense, but referring to plastics with very high resistance to friction , that do not need oil and the like. They will probably never wear down under such light loads ,or wear down only slightly over a lifetime

(that is my understanding anyway, I am open to correction)
 
A mechanical or automatic watch has a gear train which is under a high torque load from the mainspring, and is in constant motion. Even with lubrication, many moving parts wear out and must be replaced. Without lubrication, they simply wear out sooner.

A quartz analog watch has a much simpler gear train, which operates under a very light load, and is stationary for 90% of the time. Sometimes, gears are made of plastic, which don't require lubrication at all. This is why, even though many quartz movements don't have jewels, they STILL run more accurately than almost any mechanical/automatic movement.
 
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