AISI316 L stainless steel monobloc case, micro-shot blasted and satin-finished. Monobloc case, bezel and lugs are coated by military standard varnish, urban pattern. Dimensions (approx): diameter 45.00 mm; overall dimensions at crown 54.40 mm; height 57.90 mm; thickness 17.80 mm; bayonet-mounted crown at 2 o'clock with patented system for unlocking from movement. Four steel lugs, satin-finished; 5.00 mm thick, flat-convex sapphire watch glass, rotating bezel with engraved time scale and micro-dot in luminescent material at 12 o'clock, with external aluminium bronze saw-tooth and sliding rotation locking system at 4 o'clock. Automatic helium escape valve at 6 o'clock.