This product has cosmetic defects, has been used, but reconditioned to work to factory specs. World's largest SWR/Wattmeter has GIANT 6 1/2 inch meter face. Covers 1.8-54 MHz. True peak reading circuit captures forward and reflected power readings. Has 20/200/2000 Watt ranges which makes it valuable for QRP or QRO operation. Use 9V battery or 12 VDC or 110 VAC. Power saving circuit turns on meter only when power is being measured.