#.22lr tunacan professional#
#.22lr tunacan series#

These include theĮmperor Tuna SBDX011 from 2009, as well as the Emperor Tuna Rose Gold SBDX014 and the new Emperor Tuna SBDX013 from 2015.

If the Grandfather Tuna costs a bit too much for you, there are a number of good and affordable alternatives. Expect to pay around 7,100 USD for this watch. High-beat caliber 6159A ticks away inside this timepiece at a rate of 36,000 alternations per hour (A/h). Other features include a unidirectional diving bezel, a date display at 3, and a crown at 4 o'clock.

#.22lr tunacan professional#

This means the glass won't pop out during decompression as a result of helium trying to escape.Īs a professional diving watch, the Grandfather Tuna has large, easy-to-read indices and hands that are coated with a generous amount of luminous material. Unlike rubber seals, Seiko's version prevents helium molecules from entering the watch in the first place.

Instead of using a conventional helium escape valve, Seiko turned to their proprietary L-shaped glass seal. Water-resistant to 600 m (60 bar, 1,969 ft) and suitable for saturation diving. This light yet robust material is used for both the inner case as well as the massive outer shell, which is coated in scratch-resistant black ceramic. They were also the first manufacturer to craft a diving watch out of titanium. Seiko created this watch to serve as a tool for professional divers. This timepiece debuted in 1975 and was sold outside of Japan under the reference numbers 19. However, there are also watches with high-quality quartz, kinetic, or Spring Drive movements. Seiko equips most models with stripped-down Grand Seiko calibers. While some titanium versions can survive up to 100 bar (1,000 m, 3,280 ft), the stainless steel editions are water-resistant to a maximum of 20 bar (200 m, 656 ft). These editions tend to have lower water resistances. Only a few of the more affordable models are made of stainless steel and, in some instances, have a plastic outer case. Titanium since the very first model, known as the Grandfather Tuna. Seiko has been crafting these timepieces out of The wearer can operate the bezel via openings on either side of the outer case, which expose a section of the bezel's toothed edge. It reaches up past the unidirectional diving bezel and protects the bezel and case against strong impacts. Some collectors lovingly refer to these timepieces as 'hockey pucks' since most have black cases and are up to 52 mm in diameter.Įvery Tuna model has a large outer case that is attached to the actual case by four screws. Instead, this moniker comes from Seiko's fan community, who recognized the resemblance between this watch'sĭistinctive outer case and a can of tuna. Of course, 'Tuna' is not this timepiece's official name.

#.22lr tunacan series#

Seiko Tuna is a series of professional diving watches that have been in production since 1975.