The most advanced flasher-sonar ever built, the MarCum “M” Series offers Brushless, dead-quiet operation with dazzling bright and crisp color definition of bottom, fish, baitfish and your lure, all illuminated on the highest resolution display available in a commercial grade flasher. MarCum calls it “total system performance.” while it proudly delivers the highest output power in its class, it intelligently manages this wattage to work in concert with the precision tuned transducers and operating systems. Includes lithium shuttle. Two year system warranty. One year shuttle/battery warranty.