Non Date Submariner

[runner911]

Good Afternoon from Devon in the UK.
Compliments of the Season to everyone .
May I ask for a bit of advice please ?
I have a non date Submariner manufactured in 2007/2008 according to the Seriel Number .
Whilst looking at later models with a view to up dating , I noticed that the words " Superlative Chronometer Officially Tested " are missing from the dial on my watch .
Other watches from a similar era , are also missing this text .
Anyone know the reason why ?

[Agamemnon]

These are not "COSC" or "Superlative Chronometer" certified watches.
With the advent of the 6-digit Rolexes, all their watches were certified "Superlative Chronometer", meaning tested for an accuracy of -2/+2 seconds/day.
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[runner911]

Thank you for your quick reply .
I wear the watch in rotation with others .
I keep it in its box when not in use .
I wind it prior to wearing and it runs fine for a couple of days but then stops even though I wear it night and day and am very active.
It was seviced 18 months ago .
Any idea what the problem might be ?

[Agamemnon]

It could have a stopped rotor and therefore does not charge.
It should be checked.