This digital power standing wave meter is compact and portable, equipped with a full-color LCD display screen, which can directly display forward power, reflected power, antenna power, antenna efficiency, standing wave and battery voltage, accurately meeting the needs of amateur enthusiasts. Equipped with high-level radio wave alarm function. Delayed shutdown function, automatic startup function, and battery undervoltage protection function. Dual LED indicator function. Power fine-tuning function, standing wave fine-tuning function. One click switching between Chinese and English menu functions. Type: Digital Power Standing Wave Meter Operating frequency: 1.8-54Mhz Measurement range: 0.5-120W (SSB mode can reach up to 200W, exceeding 200W sound a buzzer alarm) Standing wave range: 1-99.9 (default alarm 2.0, alarm point can be manually set through hidden function) Charging interface: Type_c 5v/1A Battery model: 3.7v/1000mAh (When the battery voltage is below 3.4v, the buzzer beep to indicate charging, and when it is below 3.35v, it automatically shut down) Interface type: UHF(SL16) Colour:black Material:ABS Package Contents: 1 x Digital Power Standing Wave Meter 1 x Type-C Cable 1 x cushion (For prevent body friction) Only the above package content, other products are not included. Note: Light reflection 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.