Sinn Watch 456 St W Ladies. 456.015 Bracelet The reigning queen of Sinn watches, this Sinn 456 St W Ladies watch glistens with every movement of the wrist and adds an elegant and glamorous finish to an outfit. Exquisitely designed to be worn for both day and night, the femininely sized 28mm polished stainless steel case houses the ETA 2671 self winding movement which boasts 25 bearing jewels and 28,800 semi-oscillations per hour. Housed beneath the scratch resistant sapphire crystal glass with antireflective treatment is a breathtaking white mother of pearl dial set with hand applied appliques and hour and minute hands coated in luminescent colour for easy legibility in the dark. For an impressive finish, this Sinn 456 St W Ladies watch is equipped with hour, minutes and seconds functions, a date window at 6 o clock and a stunning polished stainless steel bracelet and folding style buckle.