Mini, portable, high clear voice, wireless, support TF card or SD card, plug and play.

1.Maximum supported 4GB SD card/USB memmory2.Speaker working power  4Ω 3W*23.Signaltonoiseratio  ≥85dB  Voice frequency  150~18KHZ4.Audio interface 3.5mm Mini Stereo Interface5.600MA Lithium battery 6.Charge time 1~2h7.Power, input:5V Output  3.7V 800MA

 accessories    LINE IN wire   USB to DC wire   Instruction book(Printing on the color box )   Remote control

New Style Portable Card Speaker/ Mini speaker