It's the Maranez
Rawai 300M diver, based on an early Italian military design. It came in 45 & 49mm versions, and in either brass or steel. I think it's still in production, or at least, still available from Maranez.
Rawai 45 steel
The Maranez Rawai with its 45mm case is a tribute to an early Italian military watch.
Available in stainless steel featuring a clean dial design that offers you a great readability.
The watch will come with 2 leather straps, a dark and a light brown.
Movement: NH35 automatic
Case diameter: 45mm excluding the crown - lug to lug 56mm - height 18mm - weight on leather strap 166g
Case material: Brushed stainless steel
Bezel: 120 clicks brushed stainless steel but a brass lumed pin at 12
Crown: Screw down steel crown 11mm
Crystal: Acrylic (domed)
Dial: Black, green, blue or brown, indices with Super Luminova
Water-resistance: 300m/1000ft
Strap: 24mm leather one dark and one light brown
Buckle: Brushed stainless steel