gorgeous mini speaker PC, MP3, MP4 portable laptop external lithium rechargeable battery, SD card. gorgeous mini speakerZM-LF-CK803AKey Specifications / Special FeaturesPC, MP3, MP4 portable laptop external lithium rechargeable battery, SD card, FM Frequency Range: 100HZ-20000HZ Rated Power: 3.5W + diaphragm power indicator: 5V/1.4A signal to noise ratio:> 90dB Dimensions : 125 * 95 * 70mm