4 homages of the Seiko Prospex Turtle compared side by side with the original. Prices run from about $139 to about $300 at official stores. The closest design is the Pagani Design PD-1696, with a Resemblance Score of 89.
About the original
The original Seiko Turtle is the 6306 and 6309 divers, which appeared in 1976. The 6306 was sold only in Japan and the 6309 abroad. The name comes from the cushion-shaped case with softly rounded lugs, which looks like a turtle from above.
Seiko revived the shape in 2016 with the SRP777. The SRPE93 is the later version of that watch. It keeps the cushion case, the bold hand and marker shapes and the 4:30 crown, uses the 4R36 movement and is rated to 200 m. Its main dial change from the SRP777 is a small lume pip beside the date window.
The original
Seiko
Turtle
Reference SRPE93, prospex automatic diver 200 m, black dial, silicone strap
Pagani Design PD-1696Dive, 45 mm, same size as the original, 6 reviews read
Addiesdive AD2045Dive, 43.8 mm, 1.2 mm smaller than the original, 1 review read
Berny AM1970M Cushion Compressor-style DiverDive, 44 mm, 1 mm smaller than the original, 3 reviews read
IXDAO JD-X07SDive, 39.5 mm, 5.5 mm smaller than the original, 6 reviews read