RALF TECH WRV 1977 Automatique

Automatic winding mechanical movement RTA002® based on ETA 2836 + 25 jewels, 28,800 a/h, 4Hz, incablocs® + Power reserve 44 hours + Tested water resistant up to 200M / 660FT + Complies with ISO 6425 « montres de plongée » + Functions: hours, minutes, seconds, elapsed immersion time + Case in surgical steel 316L, polished and brushed, 43.8 mm (excluding crown) + 95% matte dial in black + Domed antiglare sapphire crystal 3,9 mm thick + Unidirectional rotating steel bezel, black aluminium insert + Protected screw down crown + Screw-down case back engraved with individual serial number + Two straps: one in black Barenia leather, the second in black ZULU, lug size 26mm, buckle 26mm + It comes in an anti-shock Explorer case approved NATO + Limited edition 77 pieces + Swiss Made