I have a Casio CPW-310-1VDS watch. Is there a special procedure to change its battery? This is watch has the ability to notify the wearer of the times for prayer (a popular model worn by Muslims) and also the direction of prayer.

Guys, I just realised that there is a mark called AC on the back of the module next to a gold small circle pad. Once you change the battery, you need to connect a wire or paperclip or something similar between the back or positive of the battery and the pad, it should then come alive. Good luck

You can find manual here http://www.usersmanualguide.com/casio/watches/qw-1044
there is no summer time adjustment ,you have to add or remove 1 hour manually
my mail is [email protected] if you need other help.

When you open it there are 2 batteries ... you change one at a time... never take both out at the same time... its easy procedure... one is back-up for the other.

I just did it..

I have a question thought - do you know how to get the summer time adjusted on it ? I dont have a user manual for it.

Thanks

Salam you need to put one new battery (the top one - magnet sensor shoud be at your right or (that with the protective plastic holder)
keep it for 3 days and then put the botton one on and here you go it is up again, I tried it on 3 diffrent watches and it work.
make a duaa for me

Assalamu Alikum,
M Subhan,
my boss gifted me the cpw-310 , in Compass when I try to get the qibla direction , my display shows BATT..
dont' know why.. please help. and when I try to calibrate the campass it shows BATT.. please help me to solve the problem