Nice review but now go down town and see if you can get a stainless steel watch with sapphire glass , bracelet and automatic movement for the same price
I think you will stuggle
As to the seconds going backwards this will happen on most mecanical movements if they are non hacking and you turn the crown with just the right amount of tourque, not to much not to little but some do it easyer then others, however you should not realy be setting the time on any machanical watch backwards as it can cause exess wear to the clutch, imagine (i know it is alot different but the theory is the same) driving the wheels of your car forward while it is be ing towed backwards. As to the crown there should be seals inside the tub and crown but not visible out side, go to the mall and ask a small battery change stall if they can test it (do not go to an AD)