Volkano Bazooka Bluetooth Speaker - High-powered Rechargeable Version: 5.0 Range: 10 m / 33 ft Chipset: AC6925B Bluetooth Profiles: A2DP, AVRCP Charge Input: 5 V DC, 1 A Sensitivity: 83 dB 3 dB Battery Capacity: 1 500 mAh Signal to Noise Ratio: 75 dB Total Power Output: 8 W RMS / 12 W Peak Max. Size for USB Drive: 32 GB Playback Time: 1.5 - 3 Hours Driver: 3? Charge Time: 4 Hours Battery Type: Lithium Ion Impedance: 4 ? Frequency Response: 100 Hz - 20 kHz