I bought it to make a change to my watch, the two negatives are that it was too big for my wrist (I have a small wrist) and I had to go to a watchmaker to fix it. All these would be solved if it had different sizes... But also visually, the mechanisms (quik release) that it has for easy interchangeability are visible on the watch, something that is not shown in the picture nor mentioned by the store! It is somewhat bulky especially for a small wrist...