bluetooth version: 5.0Speaker Output Power: 9WBluetooth frequency: 2402–2480MHzmax. transmitted power: -5.52dBmBattery charge: 3.7V 1200mAhFunctionality: Bluetooth, AUX-IN, Mic, USB Stick, TF Card, FM Radio, Echo, EqualizerMusic playback time: 3 hoursFrequency response: 90 Hz - 20 kHzSensitivity: 80 dBSize: 24x18x33cm