The Roberts SolarDAB 2 radio is a great looking digital radio which can be powered by mains batteries or solar power! In good conditions the sun will not only power the radio but will also charge the supplied rechargeable batteries at the same time so you can enjoy the radio wherever you want. Once charged the batteries will work for up to 20 hours. This radio really is one of the most eco efficient on the market. Roberts SolarDAB 2 has plenty other "things" to offer like DAB tuner for better choice of the radio stations and digital-clear sound quality; FM tuner with RMS function for displaying the name of the station that is currently on; Favourite Station button so you could quickly found your favourite station just by one touch. It also has a headphone socket multipreset mode and an Aux in socket meaning you can listen to music from your iPod or smartphone through the SolarDAB speakers.