Build-in Battery
The VisiBell X9 Smart Wireless Doorbell Cam is a must-have for any smart home. This Smart Wireless Visual Doorbell Network Camera lets you stay connected to your visitors, no matter where you are. With Mobile Phone Monitoring, you can easily answer the door from your smartphone. The Two-way Communication also allows you to speak to your guests, making it a great way to communicate without opening the door. The camera also has Automatic Photo Taking and Free Cloud Storage, where you can store all your footage for future use. And before you buy it you should know this you should keep it connected to usb unless you have to charge it every 2 days.