the Baby Tuna “Save the Ocean” SRPH77K1. With its signature shrouded diving bezel this is directly linked to the iconic “Tuna” reference 6159-7010 from 1975. The Baby Tuna is a smaller and slightly simpler iteration of that historic model but retains the same design ethos. Its stainless steel case measures 43,2mm in diameter and 13mm in height. This means it is still not a small watch, but the unique construction of the case, with partly hidden lugs, means it wears a lot smaller in reality. The typical design of the case is mostly brushed, with polished details here and there. The knurled bezel has a metallic insert with a 60-minute diving scale filled in black. Its water-resistance is rated at 200m thanks to the Hardlex crystal, screw-down crown and solid caseback.
The SRPH77K1 comes with Seiko’s automatic Calibre 4R35, running at a frequency of 21,600vph and providing 41 hours of power reserve. It is worn on a deep blue silicone strap with a steel pin buckle and keeper. It is once more presented as a special, non-limited edition.

Quick facts – 43,2mm x 13mm – stainless steel case – Hardlex crystal – unidirectional bezel – 200m water-resistance with screw-down crown and caseback – textured deep blue dial with penguin silhouettes – applied luminous indices and hands – Calibre 4R35 automatic – 21,600vph – 23 jewels – 41h power reserve – hours, minutes, (hacking) seconds, date – deep blue silicone strap with pin buckle and steel keeper – special, non-limited edition – EUR 570

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