... ,MP4,Ipnone etc..Battery: Build-in high-capacity Li-ion battery,support long time playAudio output: 3.5mm Earphone portMaterial: Aluminium magnesium ... , flash a variety of modePlaying time: Continues to play 1-2 hoursSensitivity: 84dB±3SNR: >82dBDistortion rate: <0.4%Frequency response rate ... : balck, purple, red,Accessary: USB cable, Audio line outdoor speaker box with LED Lighting for Travel