Sinn Instrument 556 A Alligator

Description

Sinn Instrument 556 A Alligator 556.014 Alligator Strap. From the beginning, Sinn's emphasis was on creating special purpose instrumental watches that performed under extremely adverse operating conditions such as high speed, high and low pressures and altitudes, intense heat or pressure, extreme cold, high magnetic interference, and submergence in liquids.