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)/CDMA1900: 1805-1990MHZ
- 3g: 2100-2170MHz
- WiFi: 2400-2500MHz

Antenna: 4 x Omni-directional Antennas
Shielding Radius Range: up to 15 Meters (depending on the mobile service provider's network condition and background signal strength)
Power Source: Wall plug, car adapter, or built-in battery
Built-in Battery:1800mA/h
Built-in battery time: 90 minutes
Total output Power: 2 watt
Operating Temperature: -10 to +50 Celsius
Power supply: 100-240V, 12V
Device Size: 113*60*31mm    
Package Size: 209*52*86mm
Color: Silvery
System: Nextel, Wifi, Bluetooth, AMPS, TACS, NMT, GSM, DCS, CDMA, PDC, TDMA, PHS, IDEN, 3G, UMTS, wifi 

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.

Feature and Advantage:
Charging while working.
Each band can work separately or simultaneously.
Wind slots on two sides and inside coolers make a constant cooling working.

Use Notes:
Be sure to connect all the antennae before the power supply is switch on.
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.
Antenna shall be used vertical to the ground, working more efficiently.

Accessories:
AC Power Charger (we will send correct standard power charger which according customer's shipping address)
Car charger
Detachable Antenna x4
Leather Case
Carrying Strap