Tools SW-102 Meter 125-520 Mhz Digital VHF/UHF Power SWR Meter SW102 for Two Way Radio US Plug VSWR. Forward and reflected power direct readout, without any calibration._x000D_ Maximum measurable power range up to 120W._x000D_ low insertion loss (0.3 decibels or less) structure allows it to be permanently connected._x000D_ Frequency counter function_x000D_ Visible operation: Frequency,Power,SWR,FW,RW_x000D_ _x000D_ SL16 (N type) for measure handy radios_x000D_ Frequency test range: 125-520MHz_x000D_ Measurable power range: 1-120W_x000D_ test range of V.S.W.R: 1.00~19.9_x000D_ Impedance: 50ohm_x000D_ Insertion Loss: Less than 0.15dB(VHF) , Less than 0.25dB(UHF)_x000D_ Temperature: 0Celsius~60Celsius_x000D_ Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on._x000D_ Auto Power Off: 1-9 mins_x000D_ Interface: (in and out)N-J Interface_x000D_ Battery: 3.7V 600mAh Li-ion Battery_x000D_ Charger in 5V (micro-usb)_x000D_ Volume: W76 x H77 x D35mm_x000D_ Voltage: AC110V_x000D_ Colour:as shown_x000D_ Material:ABS_x000D_ _x000D_ Package Contents:_x000D_ 1 x SW-102 Standing wave meter_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ 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. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_