1. This model has bluetooth function, It offers Bluetooth support so that it can communicate with intelligent electronic productions (such like Ipad,Iphone and notebook).
2.This model has SD card and USB port, it supports music files such as MP3,
WMA and OGG.
3. This model has six channels microphone input and howling off function.
4. The range of this model is 500 meter. 
5. The case use high quality material, it is good looking and durability.
6.It is good for outdoor use.

Specifications: 

   Output power： 80W+80W
   Frequency Response  ： 80Hz-13KHz±3dB
   SNR： ≤76dB 
   Separation： 30dB
   TND： ≤0.2%
   Components Bass -15"x1(Y15-1)  Hi-3"x2(G75)
   Operating voltage： AC220V/50Hz
   Net weight：    25.5 Kg
   Size： 445(L)x365(H)x778(W)