actually quartz = battery or electricity operated
mechanical = barrel spring power, it can be manual wind or automatic
(spring drive is something in between)
sweep second actually just a watch terms.... most automatic watch is running on 18,000-36,000 beat per hour....
so it is very very fast when the second hand ticking.... especially if second hand is short, it doesnt look like ticking at all....
reset button only useful after the chrono button started and stop, it will reset after the chrono hands stop. and for flyback chrono, the reset button can flyback to 0 and restart