Invicta non working tinker or tech or donor watches

Two invicta complete NON WORKING WATCHES one is model 0609 ss 3 sub dials Blu dial case is excellent condition pushers all that works movement is bad in some way band is polished ss end links are there I will include spring bars 4 extra links that would make that band fit like 9 inch wrist the band clasp on both sides snap strong maybe hair scratches the 2 screws go to the back case 2 are installed great for a beginner watch tech the other one is a 8375 gold plated it functions time seconds the chronograph works but I can't get it to reset hmm maybe I'm doing something wrong it will have a new battery again its not functioning properly but is working full links the clasp it tight on both sides case is excellent condition as is band crystal is excellent they are quartz battery they have 4 screws that hold back plate on and aging its not wizard work or nothing will fly out at you or any thing it's easy magnification glasses tiny flat head screwdriver remove 4 screws the back will lift off and you can get a clear view and the big gapping whole is the battery tray you can get the make numbers of the movement and use AI to help diagnose and find parts etc from you're research you can find all the specs batteries that will fit how it works and a cheap way to learn to be a watch tech THEY ARE NOT GUARANTEED NO WARRANTY TIA