Tuna divers are not normally my jam but this one is really quite attractive, and is from the 2022 Save the Ocean series. I like the textured dial with the diving penguins on it and the special caseback (which can be seen at the Seiko web site). This one is a 'baby tuna' at only 43mm diameter and 13mm thick. It's also a true diving watch with rotating bezel, screw down crown, and 200m water resistance.
Full specs:
Case Diameter: 43.2mm
Case Thickness: 12.6mm
Case Material: Stainless Steel
Movement: Seiko 4R35 Automatic with Date
Bezel: Rotating Bezel
Indexes: Luminous Hands and Markers
Crown: Screw Lock Crown
WR: 200m
Strap: 20mm Silicone
Warranty: Seiko 3Yr.
12 remaining in stock at time of posting.
Great price if you want a mid-sized auto tuna. I have the light blue STO tuna and only paid $177.80 at DJs