Longer battery life,longer standby Doorbell powered by 3pcs 18650 batteries(Not Included),The batteries can last about 3 to 4 months with normal use(5-min events a day),Live View:Up to 30 hours

Outer SD card slot, Easy to set upCompared to Built-in SD card,it is much easier for users to set up the sd card based on outer card slot
Easy to Install & Service Guarantee Compatible with iOS and Android mobile devices, and Mac and Windows PCs. Watch over your home in brilliant 720P HD video.