Introduction: 120w digital power standing wave meter Direct reading of multiple parameters of forward and reverse power standing wave 240 x 240 full color HD display High standing wave alarm function Delayed shutdown function, transmitting automatic startup function, and battery undervoltage protection function. LED dual indication function Power fine-tuning function, standing wave fine-tuning function. One button switching function of Chinese and English menus Buzzer one key on/off function One button switching function of multiple display interfaces Customized standing wave alarm setting function Customized shutdown delay time setting function technical specifications Operating frequency: 1.8-54Mhz Measuring range: 0.5-120W (SSB mode can reach 200w at most, and the buzzer will alarm when it exceeds 200w) Standing wave range: 1-99.9 (the default alarm is 2.0, and the alarm point can be manually set through the function) Charging interface: Type_ c 5v/1A Battery model: 3.7v/1000mAh (when the battery is lower than 3.4v, the buzzer will ring for charging, and it will automatically shut down when the battery is lower than 3.35v) Interface type: UHF (SL16) Shell size: 88mm x 63mm x 38mm (excluding protruding parts) Material: metal+plastic Color: as shown Package Contents: 1 x SWR Meter 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.