I've got something very close to this trimmer, same brand. Some branches I want to cut are 3-3.5cm thick. Will it cut those?
Apparently not - it says in the description the gap between teeth is 16mm (1.6cm) and that indicates the thickness it will cut through. 3-3.5cm is, obviously, more than twice that thickness. You will probably find, if you use it anyway, it will 'chew' into the thicker branches, and with a bit of persistence, may eventually get them off, but leaving behind chewed up ends instead of clean cuts. These should then be 'cleaned up' by hand with a sharp pair of secateurs or loppers, cutting below the damaged area cleanly.