jewels in quartz movements ?

[d.b]

I've heard some quartz movements (e.g. ISA 8162/220) has jewels, like in mechanical movements..

what i don't understand, does a quartz movement can benefit from jewels in some ways?

or is it just a gimik ?

daytona il

[jkarpas]

jewels are used to compensate friction on posts, gears and other moving parts of the watch. I am not so aware of how a quatz mvt works in detail but i am sure that reducing the friction in its moving parts contributes to the good timekeeping and reliability