Onboard LM386 Chip.
200 multiplier benefits circuit design.
On-board speaker wiring Block.
On-board 10K variable resistor, you can adjust the volume of the enlarged.
Onboard Power Indicator.
Working Voltage: 3.7V Lithium Battery 600MA or 5V USB Power Supply
With Power supply, it can play Automatically
With Multifunction LED indicator
Supports MP3 format playback
Supports USB audio mode