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Boost cellular signal and expand signal range with this powerful Smoothtalker Mobile X6 booster kit, featuring multi-user and multi-device compatibility. The Mobile X6 improves 4G, LTE and 3G voice calls and increases data speed for all cellular devices. As the highest power wireless multi-user vehicle booster on the market, the Mobile X6 will keep you connected to networks up to 48km (30 miles) away from the nearest tower. Additionally, the rugged cast aluminum construction provides superior shielding, heat dissipation and longevity. This booster will keep you connected where other boosters fail.