Working Frequency : VHF (170-240Mhz) / UHF( 470-860Mhz)VSWR : less than equal1.5Impedence : 75 LNA Gain : 25dBReception Range : 120 miles (Max)Cable : 1.5C - 2V / Lenth = 4mConnectors : UniversalPolarization LinearVoltage : 5VPower Supply Connector : USBOperation Temperature : -45 ~ 85 CelsiusStorage Temperature : -45 ~ 85 CelsiusCompatible with 720p, 1080i, 1080p/ ATSCSet up guide :Step1 : Connect the end of attached coaxial cable to the ANT/IN connector on the back of the TV or Digital Converter Box, Plug the USV plug into the USB port of the TV or Digital Converber Box.Step 2 : Hand held the antenna, near the window, place it horizontally or vertically.Step 3 : In the TV s or STB s setup menu, set the tuner mode to " Antenna " or " Air " For more detailed instructions, please refer to your TV manual.Step 4 : In the TV s or STB s setup menu, set TV to " scan " for channels. This can sometimes be listed as auto-program,auto-scan,channel search or channel scan. Consult the TV manual or detailed instructions.Step 5 : If reception is sporadic, try moving the antenna to another location and rescanning the TV until optimal postition is found.Step 6 : Fix the antenna at the optimal position you found.Color: BlackMaterial: ABSSize: 21.8 x 3.5cmPackage Contents:2 x Indoor Digital TV Antenna2 x adapter2 x ManualOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.