1.Wireless transmission, change the audio signal to FM signal and transmit wirelessly to car or family stereo sets, suitable for all kinds of portable products with audio frequency, e.g. CD/VCD/DVD/MP3 etc. 2.Different transmit freqencies for meeting different customer requirement in different regions. 3）MP3/WMA format digital musical play mode 4)Long time recording, U disk store function 5)Mutiple choice of EQ effect, repeat playing 6）USB high-speed transmission, battery recharge automatically 7)Suitable for any kinds of cars, no any changement is required, more than 100 pcs of musics can be stored and played 8)Hug autobaby, enjoy easeful and comfortable car life in network age.