Correct way of replacing battery in water-resistant watches such as Tag Heuer, Breitling, Omega, Rolex

and this is the way we doing it at Fine Swiss Watch Service

Important rules

Always ensure the crown is pushed right down and/or screwed tight before entering the water.
Never use a chronograph function while in the water (unless the watch is designed for that purpose) as water could get into the movement.
A watch professional with the appropriate equipment can test a watch’s water-resistance.

The different degrees of water-resistance are:

A water-resistant watch isn't’t only for divers...

If you notice mist under the crystal or signs of oxidation on the dial, take your watch to a watch professional without delay.

First we open watch with factory key specially designed for Tag watches. Nobody like scratches on their watch
Old battery removed
Pressing crystal out to remove crystal gasket
Crystal and case back gaskets removed.
Old crystal gaskets is so dry it breaks in little pieces.
Removing crown gasket
Old gaskets removed.
Now to parts search
Bingo
New gaskets compared to old
Inserting crystal with new gasket
Installing new case back gasket
New crown gasket
Applying Fomblin grease
Installing new battery
Battery holder
Well you know
And now for final pressure test, watch is tested to Factory specification
And that does it Battery replacement correct way.

We provide Tag Heuer watch service and Tag Heuer repair for following states

Alabama • Alaska • Arizona • Arkansas • California • Colorado • Connecticut • Delaware • Florida • Georgia • Hawaii • Idaho • Illinois • Indiana • Iowa • Kansas • Kentucky • Louisiana • Maine • Maryland • Massachusetts • Michigan • Minnesota • Mississippi • Missouri • Montana • Nebraska • Nevada • New Hampshire • New Jersey • New Mexico • New York • North Carolina • North Dakota • Ohio • Oklahoma • Oregon • Pennsylvania • Rhode Island • South Carolina • South Dakota • Tennessee • Texas • Utah • Vermont • Virginia • Washington • West Virginia • Wisconsin • Wyoming

Phoenix • Tucson • Palm Springs • Sacramento • San Diego • San Francisco • San Jose • Denver • Jacksonville • Miami • Orlando • Tampa • Atlanta • Chicago • Indianapolis • Kansas City • Louisville • New Orleans • Boston • Baltimore • Detroit • Grand Rapids • Minneapolis • Charlotte • Raleigh • Omaha • Atlantic City • Las Vegas • Reno • Buffalo • New York City • Cincinnati • Cleveland • Toledo • Tulsa • Portland • Philadelphia • Pittsburgh • Memphis • Nashville • Austin • Dallas • Houston • San Antonio • Salt Lake City • Richmond • Seattle • Spokane

FL - MD - LA - NV - GA - KS - WV - ME - OR - UT - MO - SD -   NE - MA - TN - IA
         VA - CA - TX - SC - OH - NY - IL - AL - IN - WY - ID - CO -   NM - RI - NH - WA - HI
      VT - AZ - ND - NJ - AR - MN - MS - MI - KY - MT - PA -   AK - NC - DE - WI - CT - OK