Working Frequency: VHF (170-240Mhz) / UHF( 470-860Mhz)VSWR: less than equal1.5Impedence: 75 LNA Gain: 25dB Range: 120 miles (Max)Cable: 1.5C - 2V / Lenth = 4mConnectors: UniversalPolarization: LinearVoltage: 5V Supply Connector: USBOperation Temperature: -45 ~ 85 CelsiusStorage Temperature: -45 ~ 85 CelsiusCompatible with 720p, 1080i, 1080p/ ATSCSet up guide :Step1: Connect 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 , set the tuner mode to Antenna or For more detailed instructions, please refer to your TV manual.Step 4: In the TV s or STB s setup , set TV to scan for channels. This can sometimes be listed as auto-program,auto-scan,channel search or channel scan. the TV manual or detailed instructions.Step 5: If 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.Colour: BlackMaterial: ABSSize: 21.8*3.5cmPackage Contents:1 x Indoor Digital TV Antenna1 x adapter1 x ManualOnly the above package content, other products are not included.Note: Light 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.