Channels : total 6.  Each channel is with DLP switch, ok for turn on or off according to need .

Battery time: 1 hours continuous using .

With Ventilation hole .

Working Frequency ：

Frequency 1： 870-960MHz (2G + 4G band 5, band 6, band 8 , band 18 , band 19 ,band 26 )
Frequency 2：1800-1880MHz (2G + 4G band 3, band 9, ) ,
Frequency 3:  2100-2170MHz  (3G + 4G band 4, band 10, ) ,
Frequency 4:  2400-2485MHz   ( WIFI ) 
Frequency 5:  1560-1610MHz   ( GPS l1 glonass G1 Beidou B1 )
Frequency 5:  2510-2690MHZ  (4G band 38, band 41  and wireless transmitting ) ,

We can produce and adjust frequency band width according to  your need 

Frequencys of 4G for reference .