What year is a esquire esq chronograph model 300391

If watch expensive, take it to Shop to get it changed , if watch waterproof, it needs to be changed at a shop, as when battery changed , shop checks that the watch is still 100% waterproof.

http://www.movado.com/media/manuals/pdfs/esq/ESQ_Octane_Analog_Instructions.pdf Try try this

go to the link below to download the manual
http://www.invictawatch.com/service/view-the-instruction-manuals/

Interesting question. I know little about watches but, as you would know, your watch does have a quartz movement, so, from Wikipedia, 'Quartz clock':

Standard-quality resonators of this type are warranted to have a long-term accuracy of about 6 parts per million at 31 degrees C (87.8 F): that is, a typical quartz wristwatch will gain or lose 15 seconds per 30 days (within a normal temperature range of 5 deg C / 41 F to 35 deg C / 95 F) or less than a half second clock drift per day when worn near the body.

If a quartz wristwatch is "rated" by measuring its timekeeping characteristics against an atomic clock's time broadcast, to determine how much time the watch gains or loses per day, and adjustments are made to the circuitry to "regulate" the timekeeping, then the corrected time will easily be accurate within 10 seconds per year. This is more than adequate to perform celestial navigation.

Assuming that you have a computer with internet-synced time and good internet, meaning around 1/100 second accuracy, why not compare the watch to the computer over the space of a week?

Movado watches require repairs done by an authorized Movado dealer. Call your locally-owned high-end jeweler and they can send it off for you... or Google "Movado repair" for an online resource.
It's not cheap (just like the Movado watch!), so I guess you need to decide how important it is to you to have the second hand movement.

Need instruction on how to open clasp on Oceania esq watch?

sounds like it needs to be serviced under warranty. The clutch mechanism maybe jammed or broken.

It isn't a fault and can be adjusted. Follow this link and find out how to.... http://www.invictawatch.com/ Point at COLLECTIONS and click on INSTRUCTION MANUAL. If you don't know which one of movement makes you have, try both (RONDA first, then MIYOTA). When sorted with type of movement, check how to reset chronograph to 0 (zero).
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This is chronometer that's need reset. Tachymeter is usually located on bezel or inclined ring and is used for speed calculations of moving object over the given period of time. Ok, back to your chrono hand resetting. Pull out crown and then push the upper button and hold it. The chrono hand should start move and you should be able to adjust it. If this doesn't work, try the same with lower button. When adjusted - push the crown back in. In fact there are very many variations how to reset chrono hand, but exact advise can be given if the movement caliber of particular watch is known.
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