Feature: 1. DIGITAL DISPLAY: Direct display of forward power, reflected power, antenna power, antenna efficiency, standing wave and battery voltage. 2. WIDE RANGE: With 1.8MHz to 50MHz frequency range, 0.5W to 120W power measurement range, 1.0 to 99.99 standing wave measurement range. 3. MULTI FUNCTION: Equipped with buzzer alarm function, which can be closed by one button. Support one button to switch languages between Chinese and English. With five modes, which can be switched at will. 4. MULTI INTERFACE: Have 5V 1A Type C charging interface, ANT interface, TX interface (ANT and TX are equipped with two dust proof transparent covers and two male connectors). 5. ALUMINUM ALLOY SHELL: The shell is made of aluminum alloy, with compact structure, light weight and easy to carry. Specification: Item Type: Antenna Tuner Material: Aluminum Alloy Frequency Range: 1.8MHz to 50MHz Measuring Range: 0.5-120W (210W at most, it is recommended to use FM, AM and CW modes less than 120W for a long time, and SSB mode is optional) Measurement Accuracy: <±5% Standing Wave Range: 1.0-99.99 Insertion Loss: <0.1dB Access Interface: SL16 (M head) Charging Port: Type C, 5V 1A Battery: 1 x 503450 1000mAh polymer lithium battery (built in). Package List: 1 x Antenna Tuner2 x Interface