Features:

Working Voltage: 3.7V Lithium Battery 600MA or 5V USB Power Supply
Chip:GPD2846A
Chip Footprint:SOP16
PCB Size:34.23MM22.33MM1MM
with 2W Mixed mono
With Power supply ,it can play Automaticly
With LED indicator
Supports MP3 format playback
Supports USB audio mode
Supports 3 types FM radio chip : RDA5807, BK1080 and RTC6207E.
Does not support infrared remote control.
Does not support USB device mode