The Drive 4G-X OTR Truck Edition amplifier is a professional grade amplifier that wirelessly enhances cell signals up to four devices (smartphones, tablets, Kindle, etc). With up to +50 dB gain, it provides maximum output power and 60% more reach to and from the cell tower. This results in stronger signals, longer battery life to your cell phone, and clear connections. With over 40 years of industry-leading telecom experience, weBoost has been solving frustrating cell phone reception problems with FCC-certified signal boosters for weak signal areas in the city or remote, rural areas. Easy to install, complete DIY kits.