HIGH QUALITY-- This Antenna Analyzer adopts black case would protect the antenna analyzer from external damage, durable in use._x000D_ CONVENIENT OPERATION-- operation buttons are easy and convenient to operate. You can selects operation mode, band and extended functions._x000D_ FEATURE-- The antenna tester is Powered by DC 12 to 14V 500mA external power with 2.1mm power (center pin positive), just connect the power and then work. The meter has compact size, easy to carry and store in your bag._x000D_ WIDE MEASUREMENT RANGE-- SWR usable measurement range of this analyzer is 1.0 to 9.99. step size: user configurable increments of 100Hz, 1KHz, 10KHz, and 100KHz._x000D_ APPLICATION-- Measure antenna electrical parameters: SWR, impedance (resistance + reactance), capacitance, inductance. It can measure feed-point impedance, ground loss, inductors and capacitors. Measure and determine optimum settings for tuning stubs: SWR, approximate Q, resonant frequency, bandwidth, impedance. Coaxial Cable Loss, Determine antenna tuner loss, Estimate quartz crystal parameters. Colour: Black_x000D_ material: metal Package Contents:_x000D_ 1 x Antenna Analyzer Only the above package content, other products are not included._x000D_ 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. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_