Varni S7 Bluetooth Speaker supports all kind of audio devices through bluetooth and line in cable. Operation range of 10 meters. The main technical Parameters Standard : 3.0+EDR. 4.5 hours of talk time, 5-8 hours of music playback. Input Voltage : DC5V Charges in 3-4 hours. Answer, end, Listen to music with volume adjustment, previous/next/pause functions. USB port. TF card playback support. Included components is USB cable for charging. Dimension : 12L x 7.5W x 7.5H cm