ZENO-WATCH BASEL gents chronograph in steel

ZENO-WATCH BASEL gents chronograph in steel reference 8557/2, Switzerland around 2010, self winding, on both sides glazed case blackened, screwed down case back, original leather strap with buckle, bezel with tachometer graduation, black dial with Arabic luminous numerals, luminous hands, 12 hour- & 30 minutes-counter, constant second at 9, day & date at 3, calibre Valjoux 7750, 25 jewels, diameter approx. 47 mm, condition 2