This is a Victorinox Voyager. It adds an electronic clock and an alarm to the popular Climber model.
The Swiss shield is actually a button that controls the clock and alarm. The Voyager has plus scales, containing a straight pin and a pen. Usually, the tweezers are in the front scales, but since there is no room for the tweezers (the battery compartment is in the way), the tweezers have moved to the back scales. They are a bit smaller than the usual ones.
The scales themselves are charcoal/onyx. I don’t know what they are made of: it could be cellidor, but they have a different feel than regular, smooth cellidor scales. It could also be nylon or ABS. They are translucent and don’t scratch as easily as smooth scales.