So the unique part of this watch is the movement. A 51 parts and hacking movement with a power reserve of 90 hours. Yes 90 hours!! I bet your Rolex is out of power reserve a long time before your 150 dollar automatic Swatch is. The Sistem51’s movement is made entirely from a material called ARCAP. This alloy of copper, nickel, and zinc has anti-magnetic qualities, which prevents the movement from needing adjustments over time. Ass mentioned the Sistem51 is made of only 51 parts, spread around 5 modules and linked one to another by only one central screw. The movement is fully manufactured by laser guided machines, without human intervention, even to adjust the accuracy of the balance wheel and the escapement. The movement can not be serviced as it is hermetically sealed. Swatch claims that it needs no service for at least 20 years. Well these ar features I am really exited about. No services every 5 years, automatic movement with 90 hours power reserve, 51 parts…..wow! And it is great to look at the back. A transparent rotor allows you to see the full movement. FYI, Swatch states it has an accuracy of +/- 7 seconds per a day. That is a rate very close to the COSC requirements of -4/+6 seconds per a day.