Livingston Lures feature Electronic Baitfish Sound Technology, (EBS), which is embedded on a smart chip in the internal sound chamber of each lure. This EBS Technology produces natural biological sounds mimicking baitfish that bass, walleye, pike, redfish, striper, perch and all predatory fish feed on. Natural baitfish sounds call fish from beyond their sight, including in dark or dirty water. Once fish are called and are in sight range, the sounds trigger instinctual survival strikes. The technology is activated when the lure is submerged in water & automatically turns off when out of the water and completely dry. EBS Technology attracts more fish and triggers more strikes so you can catch more fish. The DM JR is a traditionally proven small profile design with a 4-6 diving square bill producing an irresistible side to side action with the ability of deflect off structure thats applicable all year long.