... ,USB/ SD.FM Function 3,Blue VFD and digit tube display screen. 4, Karaoke function VFD Display USB/SD Karaoke 2.1 Multimedia Speaker ... .2,Telescopic antenna Fm radio function.3,Blue digit and VFD display screen4,Can add karaoke(two port) function if you need ... *510mm/3sets 3,Quantity:533sets/20gp,914sets/40ft,1295sets/40HQ VFD Display USB/SD Karaoke 2.1 Multimedia Speaker