A wireless doorbell with a camera that connects to your phone via Wi-Fi. Monitor visitors at your front door from outside using your phone through an app. Compact size and easy to install. Specifications: Power supply method: Dual-use battery/USB Voltage: 36 volts and below Battery characteristics: Rechargeable battery Rechargeable battery: Lithium battery - other series Connection: Wireless, Wi-Fi Control method: App Product number: PW2344670 Buy it before stock runs out. Click the purchase button below to go to our online store. You can pay by cash, bank cards, credit cards, or in installments with no interest.