Graham present a professional divers watch in two variations - the Graham Chronofighter Oversize Diver Turbo Tech and the Graham Chronofighter Oversize Diver Deep Black. Both pieces use the same Calibre G1734 self-winding bi-compax chronograph movement with power reserve of 48 hours. Water resistance is to 1000 feet and both pieces have the required divers watch safety features - unidirectional rotating bezel and integrated helium escape valve. The trademark trigger-style thumb lever mechanism for operating the stop watch, normally a bit of a cuff-shredder on dry land, is completely at home in the depths of the ocean being perfectly usable while wearing thick divers gloves.
The Diver Turbo Tech is constructed from stainless steel with a sporty combination of black and yellow on the dial. I particularly like the "dart board" style seconds counter. On both pieces the reset pusher features a grippy "Clous de Paris" pattern and each have the symbol of the Royal Marines engraved onto the crown.
The Oversize Diver Deep Black as you can see from the image above is a handsome PVD steel-coated brute. Almost completely dark and moody apart from the red-tipped seconds and chronograph hands.
Both pieces measure 47mm and offer utmost readability thanks to a liberal coating of Super-LumiNova applied to the dial and hands.