Specifications: - Bluetooth: Version: 4.2 Profiles: A2DP, AVRCP, HFP Range: 10 m / 33 ft Chipset: ACTION - Driver: 2 x 3" - Frequency Range: 20 Hz - 18 kHz - Sensitivity: 86 dB - Battery: 7.4 V Li-Ion, 3,600 mAh - Signal to Noise Ratio: 48 dB - Total Power Output: 2 x 22 W = 44 W RMS / 62 W Peak - Playtime: 4 – 6 Hours - Charge Input: 5 V DC, 1 A - Charge Time: 6 Hours - Impedance: 4? What's in the box 1 x Speaker