Product Name: High Power Handheld Cell Phone Jammer (GSM+3G) (TG-120-PRO) Model NO.: TG-120-PRO Product Description Cover interface standards:CDMA800: 850-894MHz,GSM900: 925-960MHz,GSM1800-1900: 1805-1990MHz,3G: 2110-2170MHz,Total output power: 2WattEffective range: Up to 20 Meters. The signal strength<=-75dBm)Advantages:Advantages and features:1. Built-in battery.2. Single band control switch. You can turn on /off each band separately and without influencing other bands.3. With inside cooling fans, and have wind slots in both sides, make a constant cooling working.4. With AC adaptor and Car charger, can be used in the car directly. Work time: 90 minutes, this jammer can continue to work when charging,Support Powered by car cigarette charger.Dimension: 112(H)*62(L)*30(W) not include antennas.Whole Weight: 0.775KGContents:1. Cellular phone jammer 1PCS2. Antennas: 4PCS3. Charger: 2PCS (charger and car charger