SureCall Flex2Go 3G Vehicle Mobile Cell Phone Signal Booster | SC-DualM-50-KIT Flex2Go 50dB Dual Band manually adjustable booster kit for all size vehicles SureCall cellphone boosters for your car or truck can receive and transmit signals from cell phone towers as far away as 50 miles 50 dB cell phone signal booster kit for mobile application that supports all 2G and 3G standard CDMA, WCDMA, GSM, EDGE, HSPA+, EVDO and all cellular standards FCC Certified for new regulations and technical standards