Surecom SW-102S Digital VHF/UHF 125-525Mhz SO239 Connector Power & SWR Meter (SW102-S)   V.S.W.R. meter Introduction VSWR. Forward and reflected 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. Build in Frequency counter . All Funtion display ( Frequency counter ,Power watt , SWR ,FW,RW,Battery Level) Feature & Specification Frequency range: 125 – 525MHz Measurable power range: 0.5 – 120W( -0.5%) Input read frequency counter (must be < 0.5 W) Maximum power: 120W Impedance: 50Ω Size: W 76 X H 77 X D35 mm. Weight: < 220 grams Battery : 3.7V Li-ion Rechargeable Battery Interface: SO239 Feature & Specification (for version 2.02) MAX. Power in:120 W (Measurable power,Radio must be ANALOG) V.S.W.R: 1.00~19.99 Frequency Ranger：COVER : 125MHz~525MHz Insertion Loss：< 0.15dB(VHF) , < 0.25dB(UHF) Temperature：0℃~60℃ Frequency counter：Yes ( TX input must be minimum 0.5W – 0.5%) Battery Display：Yes Battery Build-in：3.7V Li-ion Battery Auto Power Off：1-9 mins Size：66*68*37 (mm) Charger in：5V (micro usb) Backlight：AUTO OFF Interface (in and out )：SO239 Weight：220g (include battery)