Based on an over thirty year-old design, the Marine Master 300 (model reference SBDX001) is like taking a step back in Seiko history. The quality is supreme, starting with the monocoque case, heavy but comfortable. The movement is a 26 jewelled, 28,800 bph 8L35, an undecorated and unadjusted version of the high-end Grand Seiko 9S55. The dial is a rich and gorgeous matt black, with applied silver indices and Seiko’s magnificent Lumibrite fill on markers and hands.
This one is my 4th, and I’ve bought it again (for the last time) because I genuinely think it’s the best bulletproof, everyday watch that you cab get for the money. The only fly in the ointment is that they still need to go back to Japan for servicing (although that situation may be changing any time now).