Handheld 4G Cell Phone Jammer can jamming worldwide network

     4G Cell Phone Jammer Be sure to connect all the antennae before the power supply is switch on.http://www.4gcellphonejammers.com/
       When you get the device in the first time,recharge the device only after the power is used out.To prolong the lifespan of the device, try to recharge it no less than 12 Hours.
Any sealed mark on the machine teared are void, excluding from the repaired service.

Don’t put the jammer in the water and fire to avoid using in the bad, Condition of over-wet, over-hot, high voltage and high magnetism.4g cell phone jammer
Antenna shall be used vertical to the ground, working more efficiently.

Charging while working.4g cell phone jammer
Each band can work separately or simultaneously.
Wind slots on two sides and inside coolers make a constant cooling working.

Suitable for: Police and Meeting Room, Security Services, Military Units,Prisons, Banks, Churches, Conference Rooms, Classrooms, Secret Services, News Conference Rooms, Libraries, Museums, Customs, Houses.

Main Feature: Four Bands Handheld Cell Phone,  Wifi Signal Jammer with Single-Band Control (For Worldwide all Networks), Each band can work separately or simultaneously.
Isolating Signal Bandwidth:
- CDMA & GSM: 850-960Mhz 
- DCS (PHS)/CDMA1800.1900: 1805-1990MHZ 
- 3g: 2100-2170MHz
- WiFi: 2400-2500MHz