Citizen Aqualand JP2004/JP2000 Battery Change C520 CR2016

Citizen Aqualand reissue JP2004 battery change. The C520 movement takes a CR2016 battery, you'll need at least a caseback removal tool and a small screwdriver.
I don't know the Citizen part number for the gasket, if you know, please comment.
Update: Possibly gasket is 393-00045? Haven't confirmed.
00:00 Intro
00:42 Internals exposed
01:01 Screw holding battery cover
01:25 Battery cover off, exposing battery
01:36 Battery makes a leap for freedom
03:34 Battery cover back on
04:05 Reset movement
04:42 Silicone grease on case gasket
05:11 Caseback back on case
05:36 Question: what is the case gasket part number?

[@TechBunnyYoutube]

Thank you for this video, it will make my future battery replacements easier. the jp2000 is still the best free diver watch money can buy..

[@watchwatchboi]

Thanks, glad it is of some use!

[@BBHorology]

Great video! I would like to do the same since I don’t want to send my watch to Citizen and wait. I rather do it myself. My question is what about water resistance? By me changing this battery will it comprise the water proof test?

[@watchwatchboi]

Strictly speaking, the watch would need a pressure test to verify no leaks. If you changed the battery yourself, perhaps you could find a local jeweller to pressure test it, without having to send to Citizen? Whatever you're comfortable with. Personally I'm pretty careful with seals, checking that they are seated correctly etc. so far, so good, but no guarantees.

[@BBHorology]

@ Thank you for your reply. I really appreciate it

[@swedendive]

Where to buy O-rings to Citizen Aqualand JP2000-08E ??

[@MothCattuchini]

what a noice and good video :D)))

[@watchwatchboi]

why thank you you noice and good citizen :D)))))

[@TwfOsÜn]

Excellent many thanks showing inside of this beauty still best diver watch without deco info

[@watchwatchboi]

@@TwfOsÜn Thanks, yeah they're a classic!

[@swedendive]

What type of screw driver?

[@watchwatchboi]

I think it was the 2mm blade, usually 2mm is the green handle if the screwdrivers follow standard colour code. But I'm not sure, as the video was actually taken quite a few years ago. Either way, choose the blade that best fits the screw, it might not be the green! Next battery change I'll check.

[@freddies2474]

This is a replica right?

[@zepafra]

This watch needs an eco drive update with a backlit display and nothing more (no screw down push buttons, no additional hands on the dial). Citizen will not listen.

[@watchwatchboi]

That would be an excellent update.