A perfect travel-fan in miniature: fits into any hand luggage, is simple to connect (USB connector for the PC or at best an appropriate connector with USB-input companies), amazingly powerful, in hot, not air-conditioned hotel rooms is sufficient space on the nightstand , and you get in any case much fresh wind in the face, that one good falling and staying asleep can ... And besides, is this "small portion" also inexpensive and surprisingly quiet, sounds a bit like ocean waves, which increases the nightly "calming factor".