... sweet voice,For dry batteries only,easy install Features:C-700 BATTERY OPERATED DING DONG DOOR CHIMEFor dry batteries only, ... easy installationUse 3 pcs of R14 "C"dry batteriesTenderness pure metal "DING DONG" sweet voiceThe ... production, 70% balance before shipment, OR 100% L/C at sight;3)Lead time: Around 45 days after the ... month. doorbell,Ding-Dong doorbell chime,door chime C-700