... PromptsControlsPower On/Off Button, i-Button, Shock ButtonIndicatorsState LED, Graphical Rescue Guide LEDAudio SpeakerProvides voice promptsBeeperProvides various audible indicationsLow Battery DetectionAutomatic during daily ... InitiatedBattery Insertion TestBattery PackBattery Type12 Volt DC, 4.2 Ah, lithium manganese dioxide, disposable long-life primary cell.CapacityMinimum 200 shocks or ...