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Graham Chronofighter Oversize Diver Turbo Tech & Deep Black Watches

As any diver will tell you, as you descend below 250 feet you enter the so-called twilight zone where the light becomes faint. Here, bioluminescent creatures live and do their stuff, along with many other weird and wonderful creatures too.

For any serious diver this is a great place to explore, and that is why Graham Watch  has designed a professional watch especially for these depths.

So here is the Graham Chronofighter Oversize Diver Turbo Tech, with its sapphire crystal with double-sided anti-reflective coating, which will help you track time in this amazing environment.

Graham Chronofighter Oversize Diver new watch is 47 mm in diameter, resistant to 1000 feet/330 metres and designed around the needs of the professional diver.

The professional diver usually requires a built-in helium escape valve, which allows for a prolonged deep water trip. Needless to say this features on the Chronofighter too.

When coming up from the depths after days in a diving chamber breathing Trimix or Heliox (a special divers gas for deep water work), this valve will equalise the pressure difference between the trapped gases inside the case and the surface.

Helium, as you may know, is the world's second smallest molecule, it will inevitably find its way into your watch if you spend some time in a diving chamber. The solution to this is to include a pressure release valve integrated into the 2 o'clock part of the case. But pressure isn't the only consideration behind the design of this watch.

A dial as bright as a firefly squid

The Super-LumiNova coating on the dial and hands will also help you read time in the dark, as clearly as you can see a firefly squid.

Even with diver gloves on, the use of the trigger to activate the stop watch is dead easy and intuitive. The same goes for the unidirectional rotating bezel for measuring dive and decompression time.

Other features include: Calibre G1734, self-winding bi-compax chronograph, 27 jewels, 28,800 A/h (4Hz), 48 hours power reserve, and on integrated hypoallergenic black rubber strap.

By the way, if you are not a professional diver and you use your watch in water no deeper than your bath tub, that's also fine.

You might want to consider the Graham Chronofighter Oversize Diver Deep Black. Of course waterproof to the same depth and with exactly the same features, it uses grey Super-LumiNova on the dial.

Elegant and with a nod to fashion, it still is the same professional divers' watch.

Whichever watch you choose, it should make as big a splash when you go out to dinner, as when you tilt backwards and begin a deep water dive into the deep.

New Graham Chronofighter Oversize Diver Watches Technical Features

Functions:

Chronograph (seconds, 30 minutes counter)

Date at 7 o'clock

Helium escape valve

Hours, minutes, seconds from the centre

- Central chronograph second hand

- 30 minutes counter at 9 o'clock

- 60 seconds counter at 3 o'clock

Left-hand side fast-action start/stop trigger and reset pusher

Movement:

Calibre G1734, automatic bi-compax chronograph

Frequency: 28,800 A/h (4 Hz)

Incabloc shock absorber

27 jewels

Power reserve: 48 hours

Case:

Steel (2OVEV.B15A) / Steel with black PVD (2OVEB.B38A)

Diameter: 47 mm

Thickness: 17 mm

Steel with black PVD left-hand fast-action start/stop trigger and reset pusher with "Clous de Paris" high grip pattern

Steel with black PVD bezel, rotating rim to measure decompression time

Steel (2OVEV.B15A) / Steel with black PVD (2OVEB.B38A) case back with steel Royal Marine crown-symbol secured by 8 screws

Glass: Domed sapphire crystal with anti-reflective coating on both faces

Water resistance: 1000 feet / 330 metres

Dial:

Black dial with yellow contour, black minutes counter with Silver Ring, black and yellow seconds counter with silver ring (2OVEV.B15A)

Black dial and counters (2OVEB.B38A)

Hands:

(2OVEV.B15A): White Super-LumiNova hours, minutes, chronograph seconds hands and indexes. Minutes hand with orange contour

Silver minutes counter hand with Super-LumiNova tip

Black seconds hand with red tip

Silver with white Super-LumiNova chronograph second hand with red tip

(2OVEB.B38A): Black nickel hours, minutes hands and indexes with grey Super-LumiNova.

Black minutes counter hand

Black seconds hand with red tip

Black skeleton chronograph seconds hands with red tip

Strap: Integrated black rubber

Buckle: Pin buckle

Reference:

2OVEV.B15A (Graham Chronofighter Oversize Diver Turbo Tech)

2OVEB.B38A (Graham Chronofighter Oversize Diver Deep Black)

Public price:

9,300 CHF (2OVEV.B15A)

10,500 CHF (2OVEB.B38A)

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