Bluetooth: - Version: 4.2 + JL - Chipset: AC6901 - Profiles: A2DP - Range: 10 m Battery: 7.4 V, 2000 mAh Charging Time: 6 Hours Charge Input: 110 – 220 V / 1.5 A Play Time: 4 to 6 Hours USB / SD Card: Up to 32 GB Signal to Noise Ratio: ? 85 dB Sensitivity: 88 dB Product Size: 340 x 280 x 530 mm Total Power Output: 15 W RMS, 22 W Peak Tweeter Size: 1? Impedance: 8 ? Frequency Response: 120 Hz – 20 kHz Subwoofer Size: 12? Impedance: 4 ? Frequency Response: 20 Hz – 200 Hz What's in the box 1 x Bluetooth Speaker