When unpacking from the box, I was amazed that this radio is really MINI. Is indeed in the product description. The radio has a length of about 8 cm, a height of about 7 cm and about 5 cm thick. It is powered by AA batteries. The functionality is simple and practical. The automatic channel search is working properly and the volume is adequate for such a small radio. Sound-wise should not expect miracles, however. This little radio is the perfect traveling companion. My 18 months old daughter has also a lot of fun with it, because this radio is really easy to use. As this radio has an extendable antenna, however, caution is advised in young children. So please the little ones under the supervision can play with it.