The addition of the PROSPEX shroud does indeed make the piece wear larger than most. The case itself is already huge, measuring at a diameter of 48mm (50.5mm with crown) and a thickness of 13.7mm, this piece is definitely a piece that wants to be noticed. Furthermore, the piece is also on the heavy end of the wristwatch spectrum as with all PROSPEX pieces, weighing in at 126 grams. All these specifications are basically made to make it so that this is a piece to be worn on the field. In fact, if you have been in the Seiko Watch circle long enough, the original Fieldmaster or more commonly known as the “Contra Watch” was actually a piece designed to be worn by Nicaraguan rebels. It’s an ultra-rare 1980s quartz collectible that the folks at Hodinkee have covered a few years back. Given such history, it’s no wonder where the compass and the coded caseback were inspired from.