Sprint 3G/4G USB Modem 250U Sierra 250U external magnetic antenna & adapter cable 5db 5db Magnetic antenna with 5ft cable Antenna adapter cable for Sprint 3G/4G USB Modem 250U Sierra 250U Frequency: 690~960 MHz, 1710~2170 MHz, 2500~2700 MHz Gain: 5dBi Cable with RG174/U Cable Length: 5ft Antenna Height: 12 inch