Seiko Prospex Auto "Tuna" Ltd Edt Blue Watch SLA041J1

Marking the 55th anniversary of Japan’s very first diving watch created by Seiko, this timepiece is part of a trilogy collection of new interpretations of the brand's diving heritage for 2020. This specific design recreates the 1975 Diver’s watch – which was the world’s first professional diver’s 650m with titanium case and the very first ‘Tuna’ – named by our fans because of the shape resembling a tuna can. This 2020 version is a 1,000m saturation diver design with high anti-magnetic specifications: 40 000A and, in a watch industry first, the grade of stainless steel in this timepiece, Seiko’s “Ever-Brilliant Steel,” is more corrosion-resistant than in most luxury watches today and only usually used in the marine industry. The accordion-style silicone strap combines high durability and comfort - a strap design invented by Seiko in 1975 as a practical solution to the expansion and contraction of a diver's wrist at different depths.Sold with commemorative box.

Calibre Number - 8L35

Movement Type - Automatic with manual winding capacity

Accuracy, +15 to -10 seconds per day

Duration Approx. 50 hours

Exterior Case Material - Titanium with Ever-Brilliant Steel

Crystal - Sapphire crystal

LumiBrite - Lumibrite on hands, indexs and bezel

Band Material - Silicone

Water Resistance - 1000m / 3300ft for saturation diving

Case Size
Thickness: 17.2 mm
Diameter: 52.4 mm
Length: 53.5 mm
Other Specifications
One-piece structure
Screw-down crown
Serial number engraved on the case back
Unidirectional rotating bezel
Other Features
26 jewels
Date display
Stop seconds hand function