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Questions & Answers
I have a EH-23GA Gold
you can get the crystal off, but not back on. There is a special tool that is used to compress the crystal to make it fit in the bezel. Besides, if a piece chipped off, it is no longer waterproof. Take it to a jeweler and he can put a new crystal on in no time. Crystals are not expensive.
on Nov 05, 2017
My E. Howard & Co
Yes the battery needs to be replaced.
The battery should be replaced by trained personnel to
avoid damage and to maintain the water resistance
according to factory specifications.
After battery replacement the hands of your atomic
watch must be repositioned to 12 o’clock. The hands
can be advanced either incrementally by repeatedly
pressing the T2 button or rapidly by holding the T2
button. Pressing the T2 button briefly advances the
minutes, holding the button down lets the minute hand
move continuously until the T2 button is released. (The
minute is also shown in the LCD helping you to set the
correct time.) Your watch now uses its integrated
quartz movement. Please note in this mode your watch
cannot display the date. The time you have set is
retained until your watch is able to receive the signal
from the WWVB transmitter again. The date will then
also be set and displayed in the LCD again.
After your atomic watch automatically receives the
WWVB signal the watch will be set to Pacific standard
time. You must then either press the T1 button to
confirm the time or set the desired time zone.
La Crosse Technology, Ltd provides a 10-year limited
warranty on the movement of this product against
manufacturing defects in materials and workmanship. All
other components of the watch including the lens and strap
are warranted for 1-year against manufacturing defects in
materials and workmanship.
For warranty work, technical support, or information contact:
La Crosse Technology, Ltd
2809 Losey Blvd S.
La Crosse, WI 54601
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on Aug 01, 2013
How do you change battery
The back does not come off (case is in one piece); it's the bezel -- the metal rim that holds the front glass crystal.
There is a small notch in the rim of the bezel (on mine, this aligned with the 'lower left' lug on the case around 7:00 on the face). Be careful as there is an O-ring to waterproof the watch, and this notch goes right into the groove where that O-ring is located. Use a case knife or similar stiff but fairly thin-edge blade to pop the bezel off (it snaps off). Then gently remove the outer plastic ring, noting carefully how the notches are aligned.
The inner module now can be lifted carefully out - the two 'pushers' will not fall out of the case when you do this. The battery is a 3V lithium CR2025, and you will need a fairly small straight-blade jeweler's or optician's style screwdriver to remove the one screw that holds down the battery bracket - it may be tempting to bend this out of the way to change the battery, but please resist that temptation...
Put the module back in the base, put the ring back over the dial plate, and carefully snap the bezel back in place with its notch aligned as you found it. You might want to check and/or lubricate the O-ring as you do this.
Instructions for initializing the movement are printed inside the case: they list the switch for the 'recessed' button as A, and the pusher as B. In case you didn't note them before closing the case: to reset:
1) push A once. (Display will read "SET"
2) Push A until hands are exactly on 12:00 (and display reads "12"
3) Push B once to start reception
You then follow the standard procedure of putting the watch in a window facing Fort Collins, Colorado, until it picks up the time signal and synchronizes itself.
If you need more assistance with the physical module, there is contact information on it from its manufacturer:
Model number on my module is AR600 WWVB (37.5mm)
on Jul 15, 2012
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