... and narrow field.LK 310DC magnetic yoke detectors power supplied by the 12V. 7.5 Amp. Hr batteries.Probe weight: 3 ... ,ac220VCharging: 8-12 hoursLK - 310DC (AC/DC) magnetic yoke detector powered by 12V/DC battery, artesian pulse circuit board installed inside of ... , packing box 1 only4, instruction for use 1 copy5, warranty card 1 portion6. certificate 1 copy7, fuse (3A) 5 only