Where is the serial number on Swiss army victorinox watch?

The serial number on a Swiss Army Victorinox watch is typically located on the back of the case. You may find it engraved on the case back, often alongside other information such as the model number and water resistance rating. In some models, it can also be found between the lugs, where the strap connects to the watch case. If you're having trouble locating it, consulting the user manual or contacting customer service can be helpful.