These new MFJ Giant SWR / Watt meter series have large 3 ⅝" Cross-Needle SWR / Watt-meters that have a three-color scale for improved readability. These wattmeters simultaneously display forward/reflected power and SWR all at a glance! They each have individual meter scales for each power range that increase reading accuracy. A True Active peak-reading circuit is included for SSB operation (MFJ-891 only). LED backlighting provides smooth and even illumination for easy night viewing. Low bias Schottky diode detectors increase linearity from low power to high power readings. A true directional coupler for increased accuracy gives solid readings over the entire frequency range, HF to UHF. DC grounded antenna connectors prevent electrostatic build up. SWR less than 1.2:1. Meter accuracy is +/- 10% of full scale or better. Has lighted meter on/off switch. These wattmeters are extra sturdy with large rubber feet and a rugged metal and a designer-styled plastic injection molded front panel. Handsome black speckled finish and gray molded front panel aesthetically complements today’s modern transceivers. Quality SO-239 connectors. 7 ¼"W x 4 ½"H x 4 ½"D.