GPS 3G Cell Blockers

New High Power Cell Phone-GPS-3G Signal Jammer with Signal Band Control Swith This newly designed model difference from others is its Band Control Swith Function. It can block the the cell phone,Website:http://www.jammerwill.com, gps and 3g signal at the same time, but when you just want want to block the cell phone's signal, but not bloking the gps and 3g signal, you can use the swith on the item's side to control that. Turn off the gps and 3g, then it will just stop the phone's signal. What functions you need, what functions you don't need, now you can use the swith to make what you need.Specifications■Main Function: High Powered Cell Phone, 3G, and GPS Signal Jammer ■Isolating Signal Bandwidth: - CDMA: 850mhz - 894mhz- GSM: 925 - 960Mhz - DCS: 1805 - 1880MHZ- PHS: 1900 - 1990MHZ - GPS: 1500 - 1600Mhz- 3G: 2110 - 2170MHz ■Antenna: 4x Omni-directional Antennas ■Coverage Area: 5 to 15 meters ■Power Source: Wall plug, car adapter, or built-in battery ■Internal Battery: 1600mAh rechargeable LI-ION ■Typical Battery Life: 2-3 hours of continuous use ■Total output Power: Up to 3W ■Operating Temperature: -10 to +50 Celsius ■Operating Humidity: 5% to 80% ■Power supply: 100-240v, 12v  ■Approved: CE / FCCPackage Contents■1 x Signal Jammer with 4 Antennas■1 x Power Adapter■1 x Car Charger■1 x User Manual - EnglishProduct Reviews:1.It\'s a powerful device. It\'s wonderful, works so well. Now, it\'s a necessity of our work. Very good!2.Great product, very happy. Really a good deal!3.This product is just the one I was looking for. Like the design very much. I have already bought one and it works well. Thank you very much!4.the resolution is really wonderful, cool,5.Thank you and keep up the good work.6.great jammer love the fact that it comes with a car power supply works as advertised very good range depending on signal strength