The roberts ecologic 4 with bluetooth is a truly amazing dabdabfm portable radio with consistent battery life of 125 150 hours it has also reduced power consumption level that helps to save batteries for longer which is not only better for the environment but also makes this radio much cheaper to operate than most of other digital radios on the market if you run out of batteries you can always plug the radio into the wall socket for immediate power through mains operationthe roberts radio