Hi, I need help with this brand of Roxy blue Calculator watch insurction and I got them from ebay but she dont have any booklet. I try to set the time. I can't do it so would you make simple explain to me how to set it up? Thanks

Had same problem. Press and hold C (mode) until the display flashes. Then press C again (without releasing) to get to time. Press "Select" to move from sec, min, hours, days, etc. Press advance to go change the actual time.
these directions work http://www.roxy.com/graphics/uc/roxy/manuals/Roxy_manual_watch_70s.pdf if you change the following: C=C Mode A=Select B=Advance
Normal Time Setting 5.1 In Normal Display, hold C-Button for more three seconds and then push C-Button once. Tuesday flag and seconds digits will flash. Push B-Button once to reset the second to zero. 5.2 Push of A-Button once: Minute digits flash and advance by depression of B-Button 5.3 Push of A-Button once again: Hour digits flash and advance as above. 5.4 Push of A-Button once again: Month, digits flash and advance as above 5.5 Push of A-Button once again: Date digits flash and advance as above 5.6 Push of A-Button once again: Flag of weekday flash and advance as above 5.7 If push of C-Button during any changing time, Normal Display will be appeared