Museo di Storia Naturale di Milano: biglietto d'ingresso e audioguida

The museum contains amazing display and the visit was an interesting experience. Nevertheless, the information provided by Vox company was confusing. It is listed as guided tour in English and requested to bring headphones. What for? Nothing specified Somewhere at the end of their email it was stated what wasn’t included… the guide. Visiting with two young kids , 7 and 5 years old, all relied on me explaining after reading the displayed TV