I'm not sure why the debate on the spring drive system is relevant, some people are constantly hung up on the fact that it contains a quartz controlled regulator....'it's not a real mechanical watch, sniff". But you can strap a Seiko spring drive watch on, wear it, it never needs a battery, doesn't need sunlight or other kind of power except what you put in with your wrist like any other automatic watch. And you'll get accuracy to within a second a week without fiddling around with positioning it at night to find the best rate. Name another mechanically wound watch that will do that week in/week out. You can debate how it is done, but it works. Let the Swiss, or someone else, design a more accurate watch. We don't have a lot of different escapements in wristwatches, mainly lever escapements that have been improved with better hairsprings, mainsprings, alloys, etc, but the spring drive idea is a lot different.