HOW TO FIND STOLEN JUNGHANS MEGA WATCH

Did you register the watch with Citizen UK? because they can give support, after you registered. I don't think they mind if you bought the watch outside the UK, as long as it is not on a list with stolen watches.
http://www.citizenwatch.com/en-us/

If the watch is running to slow or fast the problem is in the timing module where the quartz crystal is located, there is nothing that can be done to adjust this to fix it. The watch should returned to the jewelers.

This happened to me, I think it happens when theres not enough contact with skin and monitor, I put more water onto my skin and the heart rate monitor and it sorted th eproblem

Try this link. http://www.junghans.co.uk/downloads/neu.pdf scroll dow as the english part is some pages in to the booklet.
Regards
Dave.

good after noon ! if you want to repair your watch can you bring here in my own watch center ,the exact address is ,MEDRANO WATCH and CELLPHONE CENTER located at b.laqui st.brgy.3 cuenca batangas philippines,thank you ! GOD BLESS !

If you have the serial number... then all is solved.

i own a tissot too. instead of removing a link, just change which hole the link sits in on the clasp

buy it in the store!