B&O’s battery-powered Beolit Bluetooth boombox isn’t new, but this is a new version of the Beolit. It looks like the previous Beolit 12 and 15, but while those guys had three buttons, this one has an exciting extra button. Which might do one of several extraordinary things. It might change the ToneTouch equaliser preset, set or snooze an alarm or simply, and perhaps surprisingly, play the last song you Spotifyed. You don't get to decide. Well, unless you’ve downloaded the app. Then you do get to decide.