Wireless transmission rang:up to 10 meter.
Speaker drive size:4 inch.
Output power:5w
Frequency responseL100Hz-20Khz.
Signal to noise ratio:>85db.
FM scan rang:87.5-108.0Mhz.
USB charging:DC5V.
Max memory support(USB.SD):32GB.
Play time:up to 3 hours at 75% Volume
Charging time:2-3 hours.
Size:15*9.5*22cm
Support BT,FM,USB,TF card,MIC