Some Official Information:Reference AB041012/F556/201S/A20D.2Case SteelDial Blackeye GrayStrap Ocean Racer (Black)Buckle Pushbutton folding claspCaliber Breitling 04 (Manufacture)Movement Selfwinding mechanical, 2nd timezone (24 hr)Power reserve Min. 70 hrsChronograph 1/4th second, 30 minutes, 12 hoursVibration 28 800 v.p.hJewel 47 jewelsCalendar Dial apertureBack Screwed in (Limited Edition: sapphire)Water resistance 500 m (1,650 ft). Limited Edition: 200 m (660 ft)Bezel unidirectional, ratcheted (Limited Edition: bidirectional)Crown Screw-locked, two gasketsCrystal Cambered sapphire, glareproofed both sidesDiameter 47.00 mmInterhorn width 24/20 mmThickness 18,35 mmWeight (without strap) 157.85 gr.