RGM 300 Series 2 (Blue). 1 of 50 built, which is engraved to the reverse.Movement Caliber: RGM-ETA 2892-A2 – Swiss made automatic, 21 jewels, 28,800 vph. Rhodium finish – Cote de Geneve lines and perlage. Functions: Hour / Minute / Second / Date. Case: Brushed 316L Stainless Steel. 43.5mm X 17.0mm. 5.0 mm thick Sapphire crystal, Screw-Down crown, 22mm lug width, water-resistant to 2500 ft. Unidirectional dive bezel with ceramic insert. Only the White MOP version does not have the ceramic bezel insert. Weight: 5.6 oz (with Stainless Steel Bracelet: 8.3 oz). Original RGM Box and papers. Very good condition. A fine divers watch.