Fossel fs 4154

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

Go to any local Jeweler and ask them to replace the battery, about $8

Follow this link and find out what you are looking for:

http://www.fossil.co.uk/webapp/wcs/stores/servlet/ContentView?langId=10&storeId=32553&catalogId=20002&page=instructions

Rate me, please.

I changed the battery in my Fossil Grimm FS-4154 just yesterday. It takes a CR2016 coin cell. There is no need to reset the watch as long as the battery is installed in one fluid motion: if all the LCD segments turn on (88:88), just press the MODE button and the watch will reset. If it shows random junk instead, remove the battery and try again. The hardest part was getting the back plate back on; that required 2 vise-grips locking pliers, a pair of regular pliers, and a disturbing amount of force.

press the center of case back to expond the case back side

Did you put the protective cover back over the battery? sounds like a grounding problem.

take it to a qualifed watchmaker or send it to fossel.This watch is water resitant and MUST be tested to insure that it remain that way.