My WAF2110 will ocassionally lose about 20 mins for no reason,also does this watch have an internal battery.

Tip & How-To about Watches

Changing Watch Batteries
Lots of posters ask "what is the battery in my (name of watch)" with a view to changing it yourself. This is a bad idea for many reasons. You don't have the tools or knowledge to remove a rotary screw on back, or the gasket sealant for a waterproof watch. Some fashion watches have 4 traditional screw and need professional grade jeweler screwdrivers. Also, there are about 20 batteries commonly used in watches, in various sizes and internal technology, Lithium Ion, Silver Oxide and Manganese Alkaline. If you buy them, you generally have to buy 10!

Don't sweat the details. Just take the watch to your local jeweler. They have all the batteries at hand and the tools to remove the back. It is done whilst you wait for $8 to $15!

sorry we can not help you . . losing things is not our problem it is yours alone . go to jewelry store and ask them to replace it

If it's automatic and 4 years old, it's probably time for a watch overhaul. Auotmatic watches need overhauled about once every 4-5 years. It's normal for it to lose time, but 4 minutes per month may be a little extreme. So, get the watch overhauled. I would recommend Tag Heuer to overhaul it.

If you go to http://ww2.tagheuer.com/_documents/manuals/EI2246_en.pdf
you should arrive at the user manual for a Tag automatic watch which is similar to yours (an Aquaracer).

You will see that they claim 38 hour running when fully wound.

In view of the very small forces involved and the variations that occur in the manufacturing of the mechanism, I don't think that you should be surprised if there is a variation in running time.

If your genuine watch runs for a significantly less time thean they claim, you may have a reason to complain.

When the second hand moves in short jumps rather than a smooth sweep or a second-by-second hop, it means that the battery is about to run out. Usually, with a week or two the watch will stop working altogether. You should go and have it changed as soon as possible.

If it's genuine then yes it probably unscrews and you should use a special tool to do so. Don't know which battery but if the old one is a correct fit replace with same.

old battery perhaps?

get them to have it checked in their repair shop and tell them its not the battery

The battery power supply will last for two years and if you don't used nothing its happen to your watch..


Regards,
VOTIT

DON'T FORGET TO RATE

This is most likely the "battery change indicated" feature of your watch.  Change the battery, and see if the problem goes away.  If it does not, then it could be a problem with the stepper motor, which will require a watchmaker.  Of course all of this is dependent on the assumption that your watch has a quartz movement.  If it is an automatic, or mechanical you have bigger problems.