Sprint 3G/4G USB Modem 250U Sierra 250U external magnetic antenna & adapter cable 3db 3db Magnetic antenna with 5ft cable Antenna adapter cable for Sprint 3G/4G USB Modem 250U Sierra 250U Frequency: 824-896MHz,890~960MHz,1800MHz,1900MHz Gain: 3dBi Cable with RG174/U Cable Length: 5ft Antenna Height: 9 inch