Wireless V5.0

Working distance: 10M

Battery: 3.7V about 1200mAh

Normal volume playtime: about 4H

Charging: 5V / 500mA

Charging time: 3-4H

FM function with Hi-Fi speaker for clear and bright sound

Supports Micro SD card and USB card, plays mp3 format audio

Disconnects automatic after 30seconds

TF / USB slot 

Power switch

Size: L 14.5 x W 4 x H 7.5cm