Analog amplifier, bass and treble clarity, built-in lithium battery, MICRO SD / TF card decoding playback.

Play music,with high-powered loudspeakers,long time playWith line in function,can switch-in Notebook PC,MP3,MP4,Ipnone etc..Build-in stereo FM radioBuild-in 1450mAH Li-ion battery,support long time playUsing new technology Class D,Nice acoustic fidelityBuild-in flash memory,can storage large quantity music and dataFull function All in One port design,All external using single portFull function LED pilot lampHi-speed USB2.0THD+N=0.15% @ 1.5W    SNR=94db @ 1.5WSpeaker Output:THD+N=0.15% @ 1.5W    SNR=94db @ 1.5W,using Japen original materialTHD+N=0.6% @ 32Ω SNR = 92 db @ 32ΩEarphone Output:THD+N=0.6% @ 32Ω SNR = 92 db @ 32ΩPlay Duration:when use speaker about 10 to 20 hours,when use earphone about 70 hoursCharge Time:USB charge:7 hours USB(5V/1A);AC transform charge:4 hours(optional)Storage Capacities:1GB,2GB,4GB,8GBIterface Transport:USB2.0 Full speedSystem Format:FTA16/FAT32Audio Format:MP3/WMAWork Temperature:-18°C ~ 80°C