Seiko Quartz Chronograph SSB231 SSB231P1 SSB231P Men's WatchSeiko Quartz Chronograph SSB231 SSB231P1 SSB231P Men's Watch This one is a Seiko exclusive version of the mecha quartz, which means, a quartz watch with a mechanical chronograph mechanism. It is the brands ultra affordable chronograph model and makes for a fantastic first chronograph to anyone willing to move out of the plain watch realms. A precision crafted, timeless style thats both attractive and durable as an everyday beater and promises a lot of