Seiko Marinemaster GPS Solar Dual-Time Limited Edition Watch Hands On Luxury Watches Seiko by wholesalewatches - April 18, 2016April 18, 20160 Seiko Prospex was launched at 2014, and this year it updates itself. A new Prospex marine collection is launched, led by a Marinemaster watch that is the first watch, other than Astron, to incorporate Seiko’s unique GPS Solar technology. This very special watch is offered in a limited edition of