Bluetooth Auxiliary Input TF Card Playback USB Playback FM Radio Deisnged with Phone Docking 90 Watts Total System Power 4.5 Hour Playtime TWS Ready Specifications : Total System Power : 90 Watts Pure System Power (RMS) : 45 Watts Frequency Response : 100Hz - 20KHz Driver Unit (Woofer) : 1 x 8" Driver Power (RMS) : 30w Tweeter Quantity and Size : 1 x 1.5" Tweeter Power (RMS) : 15w Impedance (Ohm) : 2.2 Ohm S/N Ratio (dB) : > 80dB Separation (dB) : > 45dB Distortion (%) : <1% USB and TF Card Support : Up to 32GB FM Radio (MHZ) : 87.5 - 108.0 MHz Battery Specifications : Battery Capacity : Built In 1800 mAh / 7.4v Li-Ion Battery Playback Time : 4.5 Hrs at 50% Volume DC Input : USB 5v Bluetooth Specifications : Bluetooth Range (m) : 10 Bluetooth Profile Support : A2DP Product Dimensions : Dimensions : Width 290 x Height 330 x Length 270mm Package Contents : Audiox PRO 600HD USB Charging Cable Wireless Microphone User Manual