Seiko Prospex SRPE93 Diver vs Seiko Prospex King Turtle SRPE05

Both are Seiko Prospex divers on the same 4R36 movement, so the real choice is the case and crystal. The SRPE93 is the classic Turtle: 44.3mm steel case, plexiglass crystal, plastic strap, and a black dial that suits daily wear. The SRPE05 King Turtle adds a sapphire crystal with magnifier, a ceramic bezel, a pressed green dial, and a silicone strap, but it is bigger at 45.0mm and 13.2mm thick. Owners of both praise the movement and the lume; the King Turtle's sapphire and ceramic are the upgrades most people notice, while the SRPE93 wins on lighter, simpler wear.

• Choose the SRPE93 if you want the lighter, simpler classic Turtle with a black dial and don't mind plexiglass and a plastic strap.
• Choose the SRPE05 King Turtle if you want sapphire, a ceramic bezel and a textured green dial, and your wrist suits a 45mm case.