The "London 120" unfortunately could not see any of my USB flash drives. Various storage sizes, folder structure or individual songs, MP3 or WMA - I only got "USB ERROR" will be displayed. In the fairly good manual there was no information about USB usage. Very unusual and annoying, I found that the power button was blinking in blue, as soon as I turned on the light vehicle. Even without radio operation it flashed in seemingly random rhythm. It bothered me, especially when driving at night. When you turn on the radio started always in FM mode. CD had to be re-selected each time, as well as certain titles on eg an MP3 CD. A nice point the simple presentation and (except for the flashing) the subtle lighting.