SI1  Sinn 556. Reference 556.010. Watch measures a decent 38.5mm and is made from steel. Automatic movement by ETA. Sapphire crystals on both sides of the case. Waterproof 20ATM or 200 meters. Functions are hours, minutes, sweep seconds and date. This watch is fitted with the original full length steel bracelet with integrated folding clasp with security link. Naturally this watch is complete with the original box and papers dated February 2020. Please be aware that this watch has just been serviced and polished and is therefore in a mint condition. Please also be aware that this watch comes with an extra service set with oil and tools. Super little set with great value for money! SOLD