Bell and Ross Aviation Automatic Black Dial Black Leather Men's Watch BR0394-BL-SI/SCA Stainless steel case with a black (calfskin) leather strap. Fixed stainless steel bezel. Black dial with luminous silver-tone hands and index hour markers. Arabic numerals mark the 6 and 12 o'clock positions. Minute markers around the outer rim. Chronograph - two sub-dials displaying: 60 seconds, and 30 minute.. Automatic movement with a 38 hour power reserve. Scratch resistant sapphire crystal. Pull / push crown. Solid case back. Case diameter: 42 mm. Case thickness: 12.10 mm. Square case shape. Tang clasp. Water resistant at 100 meters / 330 feet. Functions: chronograph, date, hour, minute, second.