J. Springs is a Seiko sub brand. The name means "Japan Springs" (ask seiko what they were trying to convey with that one). It was introduced in 2001 and is actually owned by Seiko Instruments (the former Daini Seikosha). All of their movements are entry level, unmodified Seiko Instruments quartz and automatic movements (such as the intro level 7s). Their watches are all entry level models with styling being the main focus. They have a number of diver styled watches, but no true divers that I know of. The brand comes in somewhere between Pulsar and Lorus (probably closer to the former) in the Seiko hierarchy. They are marketed globally and no, I have no clue on how they differentiate from other brands (especially pulsar). There sure seems to be a lot of overlap though.
The few that I've seen seem to be of comparable quality to entry level Seiko 5's and/or Pulsar models. Many models that are not currently shown have had some interesting (read wild and/or experimental) styling.
This is one Seiko brand that often tends to get overlooked. While most of their stuff seems to be quartz, they do have a line of very interesting automatics (divers, dress, GMT and style). BTW, I LOVE THEIR WORLDTIMERS:
There is a line of automatic divers from J.Springs. Interestingly these have internal timing bezels. The "Master Diver" name came from a German Site that I read that was reporting on them (that's what they called them): -http://forums.watchuseek.com/f21/j-spring-watches-169792.html
