ALMO MECHANICAL UNISEX WATCH EXTENDABLE STEEL BRACELET 52 GRAMS When I wind the winder the mechanism does not restart, so I cannot guarantee perfect operation.  Having not opened to see the mechanism, I cannot confirm whether this watch is automatic or mechanical. This watch is sold as is, without warranty, serviced, cleaned or tested.  You buy it with full knowledge of the facts.  We have not carried out any tests, we do not guarantee operation.  Watch from estate.  I am not a specialist, I cannot guarantee how it works. I offer a wide range of watches, please consult my store.  For the condition, please detail the photos. The photos are an integral part of the description. Dimensions: Length from horn to horn: 3.8 cm Width with crown: 3.4 cm Width without the crown stem: 3.1 cm Glass diameter: 2.6 cm Width between horn: 1.8 cm Thickness with glass: 1.1 cm I remain at your disposal for any questions.