The adjustment circuit uses Amidon magnetic ring and the original TDK capacitor to ensure stable operation, excellent performance and high efficiency; The switch uses the silver-plated push button switch of the world-class manufacturer C&K, which has a great feel; The panel adopts LED to display the current standing wave ratio, which is intuitive and convenient; using macro-magnetic relay; The tuning speed is fast. The first adjustment is within 8 seconds. If the standing wave is less than or equal to 1.5, the data is automatically stored. The adjustment time is shortened to less than 0.5 seconds in the next use, and not afraid of power down; Small power can be adjusted, using 5-20W can be accurately adjusted, the minimum power of 5W, the maximum power of 120W. Maximum power: 120W Working frequency: 1.8M-54MHz Working mode: fully automatic + manual fine tuning Adjust standing wave: Most antennas can be adjusted to below 1.5 standing waves Working voltage: 8.4V, built-in two 18650 lithium battery, working current less than 0.02A, with special charger Antenna impedance: 5-1500Ω Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on. Material: Metal colour: black Package Contents: 1 x MAT-125E Automatic Antenna 1 x Power Charger Only 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.