1. EASY OPERATION The control buttons are simple and comfortable to use. You can select the operating mode, band, and advanced functions. 2. WIDE MEASUREMENT RANGE The usable SWR measurement range of this analyzer is 1.0 to 9.99. Step size: steps of 100 Hz, 1 kHz, 10 kHz, and 100 kHz. 3. This antenna analyzer features a black housing that protects it from external damage and ensures longlasting use. 4. FEATURES The antenna tester operates with an external power supply of 12 to 14 V, 500 mA DC, and a 2.1 mm power jack (center pin positive). Simply connect the power supply and start working. The device has a compact size, making it easy to transport and store in your bag. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.