Mini mp3 speaker
PC speaker
Support max 4GB SD card
Built-in audio cable
Built-in Li-ion battery

1, Max support 4GB SD card

2, Speaker: 4 omega  3w

3, SNR : max 85dB   Audio : 150~18KHZ

4, Audio jack : Mini 3.5mm

5, Built in rechargeable 500MA Li-ion battery

6, Charge time: 1~2h

7, Power source: Input 5V DC  Output : 3.7V 1000MA