Seiko 5 Automatic 21 Jewels SNK607K1 SNK607K Men's Watch Considered to be one of the biggest bangs you can get for your buck, the Seiko 5 Automatic comes with an in-house automatic movement and qualifies as one of the cheapest, high-end automatic watch that’s not dependent upon regular maintenance. This relatively small and elegant watch comes with a pedigree that easily outshines others at this price range and establishes itself firmly into the value proposition category.