SonicGear KBX8000 Portable Speakers with USB/TF Card/Radio Free 2x Wireless Mi

Total System Power : 70W
Driver Size : 12"
Driver Type : Woofer
Driver Impedance : 5.5 Ohm
Frequency Response : 40Hz - 20 KHz
Signal-to-Noise Ratio : 80dB
Bluetooth version : 4.2
Bluetooth Support : Mobile
Bluetooth transmission distance : 15m
Build-in rechargeable battery
Battery Capacity : 4500mAh/12V
Battery Charging Time : 6 Hours
Playback Time @ max.volume : 2 Hours
Playback Time @ 50% volume : 3 Hours
Frequency response : 100Hz - 6 KHz
(Microphone) Sensitivity dBV/PA : 55dB
(Microphone) Weight : 0.20kg
(Microphone) Frequency Response Curve : 100Hz ---6KHz+/-3dB
Dimension of speaker : L41 x W35 x H67
Package Contains : KBX-8000 x 1 ,Remote Control x 1 ,UHF Wireless Microphone x 2 , AA Batteries x 4, AAA Batteries x 2 , Adapter x 1 , Manual x 1