For use with vtech video baby monitors; vm321, vm333, vm341, vm342, vm343, vm344, vm346, vm351, vm352, vm4261, vm5261, vm981, vm991. Features nimh rechargable battery no memory, recharge whenever you wish 90 day warranty from the manufacturer for use with vtech video baby monitors; vm321, vm333, vm341, vm342, vm343, vm344, vm346, vm351, vm352, vm4261, vm5261, vm981, vm991