Originally Posted by
Padders
The ana-digi is actually the grandfathers of the X33, it uses the 1665 movement, the X-33 is the 1666 with the addition of a couple of features such as mission timer. They aren't a bad design but are all pretty small. I have the intermediate step, the SM Multifunction 150m which also uses the 1665. They get through a battery in around 2-3 years, a std quartz watch could be double this so that is one consideration. The crown is a bit of a weak spot, Unless recently checked, don't depend on the water resistance as the crown seal is prone to failing on all these designs.