Ball Engineer M Marvelight (43mm) - NM2128C-S1C-BK Diagonal blue aventurine glass dial with

blue aventurine glass dial with diamond hour markers

unidirectional rotatable 18K yellow gold bezel with black Cerachrom insert and gold coated numerals and graduations

18k white gold domed bezel set with 24 diamonds

stainless steel Oyster bracelet

screw-down back and push buttons

Ball Engineer M Marvelight (43mm) - NM2128C-S1C-BK Diagonal blue aventurine glass dial withFEATURES Movement _ Automatic BALL Manufacture caliber RRM7309 C _ COSC certified chronometer _ 80 hours power reserve, 28,800vph Function _ 15 micro gas tubes on dial and hands for night reading capability _ Hours, minutes, second and date Water resistance _ 100m 330ft Antimagnetic _ 4,800A m Case _ Stainless steel _ 43mm, height 13. 4mm _ Anti reflective sapphire crystal _ Sapphire crystal transparent case back _ Screwed in crown _ Amortiser