SINN chronograph in titanium, Switzerland / Germany around...

SINN chronograph in titanium, Switzerland / Germany around 1990, reference 157, titanium case including bracelet with deployant clasp & diver extension, screwed-down case back & winding crown, black dial with luminous indices, luminous hands, day, date, 24-hour & chronograph, rhodium plated movement calibre Lemania 5100, 17 jewel, diameter approx. 40 mm, length approx. 21 cm, original box enclosed, case back with signs of use, otherwise condition 2