Technical Specifications Radius range: 5-20M depending on the mobile service provider's network condition Europe and Middle east Market GPS:1500-1600Mhz GSM900: 925-960 MHz GSM1800: 1805-1880 MHz 3G: 2110-2170 MHz American and Asia Market GPS: 1500 - 1600Mhz CDMA GSM: 850-960 MHz DCS PHS:1805-1990 MHz 3G: 2110-2170MHz Total output Power: UP to 3watt System: Nextel, GPS, AMPS, TACS, NMT, GSM, DCS, CDMA, PDC, TDMA, PHS, IDEN, W-CDMA, UMTS, 3G Signal source: Synthesized Operation Temperature: -10 to +50Humidity: 5% to 80%Accessories Jammer AC Charger Car Charger Battery User's Manual