Product Name: Portable GPS Jammer with GSM 3G (TG-121D) Model NO.: TG-121D Product Description GSM800-900: 850-960MHz,GSM1800-1900: 1805-1990MHz,3G: 2110MHz-2170MHz.GPS: 1500-1600MHz,Total output power: 2WattEffective range: Radius Up to 20 Meters. The signal strength<=-75dBm)New feature:1. Inside high power fans, better cooling system, can work 24/7 continuously.2. Single band switch of each band. Can turn on/off each bands separately and without influencing other bands.3. With leather cover, easy to carry.Work time: 90 minutes, this jammer can continue to work when charging,Support Powered by car cigarette charger.Can OEM or ODM for specially request.All the TX frequency covered down link only.Dimension: 112(H)*62(L)*30(W) not include antennas.Whole Weight: 0.65KGContents:1. Cellular phone jammer 1PCS2. Antennas: 4PCS3. Charger: 2PCS (charger and car charger)