The xtr-420:battery operatedinternal battery chargericon displayexclusive low profile periscopespatented pop mode detectiontotal band protection360° total perimeter protection 3 city modes/highway modehigh gain lenstone alertsstay alertdim/dark modequiet/auto quiet modesalert prioritysetting saverselectable auto shut offsafety warning system - swspatented vg-2 cloaking technologyincluded accessories: - power cord - windshield mount - (3)aa ni-mh batteries