Ridgid; Locator; Navitrack Ii; Includes: Hard Plastic Carrying Case, Surface Markers And Clip, Instructional Dvd, Operators Manual, 4 C-cell Batteries; Power Source: 4 C-cell Batteries; Active Line Trace Frequencies: 128 Hz, 1 Khz, 8 Khz, 33 Khz, 262 Khz Standard, 65 Khz, 200 Khz Additional; Battery Life: Approximately16 Hr; Sonde Frequencies: 512 Hz Standard, 16, 640, 850 Hz, 8, 16, 33 Khz Additional; Passive Ac Line Trace: 50 Hz, 60 Hz; Weight: 5 Lb