Oris TT1 Chronograph

The Oris TT1 Chronograph, reference 01 674 7659 4174-07 4 25 06, is a chronograph with a 45 mm steel case, a see-through back and 25 mm lugs, on a rubber strap, water resistant to 100 metres. A tachymeter scale marks the ceramic bezel insert surrounding the flat sapphire crystal. Small seconds and a date window appear on the black dial. The self-winding movement is calibre 674, with a red rotor and a 48-hour power reserve.