It is an 18k heavy gold electroplated and stainless steel two tone watch diamond hour markers. It has a high grade Swiss ETA movement with jewels, which make it more precise and durable. This is considered to be a vintage men's watch. As such, the size of the watch is rather small for men according to today's standards , and it's about 1 1/4" (32 mm) diameter not including the crown. Due to its size, it can be worn by women as well. It's guaranteed 100% authentic. Should you have any questions on this lovely watch, please let me know, and I will do my best to respond as soon as I can. Wrist around 6.50"