Feature:1. Easy Operation: This meter has input and output intelligent detection function, and one key switch function.2. Accurate Performance: This meter makes the accuracy better than 4% in the whole power range from 0.5W to 120W, which has more reference value.3. Buzzer Alarm: When the standing wave is greater than 2.0, the buzzer will alarm. Greater than 3.0, the buzzer will beep for a long time. Convenient for you to monitor and make timely adjustments.4. Type C Port: With a type C port, you can use the data cable to charge the meter and transfer data. Very convenient!5. Aluminum Alloy Material: Made of aluminum alloy, this meter is strong and corrosion resistance, comes with a long life span.Specification:Item Type: Standing Wave MeterMaterial: Aluminum AlloyFrequency Range: 2 to 54MHzPower Measurement Range: 0.5W to 120WStanding Wave Measurement Range: 1.0 to 99.9Insertion Loss: Less Than 0.2dBMeasurement Accuracy: Better Than 4%Impedance: 50Standing Wave Alarm: Greater than or Equal to 2.0 (Greater than 3.0 Long Buzzer)RF Interface Type: (Default M)Display Content: Forward Power, Reverse Power, Standing Wave.Power Supply: Built in 3.7V 1000mAh Rechargeable Lithium Battery (Shipped with Built in Battery)Charging: can be Charged by USB Type C InterfaceScreen Size: 0.96inScreen Type: Organic Light Emitting DiodeData Communication: USB Type CFirmware Upgrade: SupportMaximum Measurement Power: 120W.Package List:1 xStanding Wave Meter1 x USB Cable