Features: - 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: 410 x 320 x 610 mm - Total Power Output: 20 W RMS, 28 W Peak - Tweeter Size: 1? - Impedance: 8 ? - Frequency Response: 120 Hz – 20 kHz - Subwoofer Size: 15? - Impedance: 4 ? - Frequency Response: 20 Hz – 200 Hz What's in the box 1 x Speaker