-This V.S.W.R. forwards and reflects power direct digital readout, without any calibration. -Maximum measurable power range up to 120W. -Low insertion loss (0.3 decibels or less) structure allows it to be permanently connected. -With all function display (SWR, FW power, RW power ,Battery Level) -If you have any questions, do not hesitate to contact us. We are ready to provide you with comprehensive pre-sales and after-sales services.