The device beherscht all specified functions easily. WLAN was found immediately, the connection is not a problem. MP3 playback via USB works fine. Access via the knob is easily solved (folder structures are displayed). With built-in battery (6 * C-cells) can be changed from AC power to battery operation without interruption. Finding the DAB station was no problem. The switching between the DAB stations is relatively fast (about 1 sec). The radio plays - for its size - very noisy, but lacking in sound slightly emphasizes treble. That's why only 4 out of 5 points. Otherwise it's a great all-rounder with simple operation of all sources (FM, DAB, MP3, Wi-Fi Internet Radio) has and is mobile.