The Fleuss Automatic Shell Mates edition is part of Spinnaker's collaboration with SpongeBob SquarePants, marking the show's 25th anniversary by looking at the characters who make up SpongeBob's inner circle rather than SpongeBob himself. Each of the three colorways is named for one of those companions — Gary, Mr. Krabs, and Patrick — with dial and strap color pulled straight from that character's own palette. All three are individually numbered and produced in limited runs: 350 pieces for Gary The Grey, 450 for Krabs Blue, and 500 for Patrick Green.

The case measures 43mm across, 13mm thick, and 51mm lug-to-lug, built in stainless steel with a screw-down crown for added water resistance. An anti-reflection coated sapphire lens covers the dial, and the applied indexes are treated with Swiss Super-LumiNova for visibility in low light. Each watch comes on a 22mm nylon strap with a buckle closure, colored to match its dial — pink for Gary, blue for Krabs, green for Patrick.

Power comes from a Miyota 8245 automatic movement, a Japanese-made caliber running a two-hand layout with a small seconds subdial rather than a sweeping center seconds hand. Water resistance is rated to 15 ATM, well beyond what daily wear or swimming would call for.