Invicta Diver - Recent Questions, Troubleshooting & Support - Page 3

My very brief research shows that the Invicta 1805 watch is driven by a Japanese quartz movement. That would certainly explain why you're having trouble winding it.The easiest check for quartz vs. mechanical is to observe the second hand. If it pulses only one time per second--i.e., jumps one second at a time--then you're looking at a quartz movement (I'm ignore the rare and expensive mechanical jump movements). If it looks like the hand takes 4 or more little jumps to get from one second to another, you have a mechanical movement.