Speaker Unit: 45mm Full Range Speaker *2 Output Power: 4W*2 Frequency Response: 80 Hz ~ 20KHz Bluetooth Version: 5.0 Transmission Distance: Up to 10m in Open Space Play Mode: Bluetooth/ AUX/ USB/ TF Card/ FM Radio Battery: 3.7V, 2000mAh Charging Input: 5V/ 1A Dimension (W*H*D): 180*49*72 mm Play Time: 6~8 Hours
