Fangrui Product Details Smart Wireless Remote Video Doorbell: Wherever You Are, Answer Your Door With 1080p Hd Video Day And Night Infrared And Two-way Audio. 65 Viewing Angle, The Details Are In Front Of The Door, Reliable And Practical. Wifi Connection: Portable Doorbell, No Wires Required, Two-way Intercom Between The Doorbell And The Mobile Phone Is Realized. Real-time Mobile Phone, Support Two-way Calls, Take Photos, Record, Take Care Of Your Family, And Make You Safer. (the Voice Changing Function Has Been Improved, And You Can Easily Manage Strangers' Visits When You Are Alone At Home.) App Control: The Doorbell Can Be Controlled By App, Automatic Working Mode , Smart And Wearable. Portable In Size And Weight, Easy To Install And Remove. (no Need To Drill Holes, Supports 3m Adhesive Stickers, Also Supports Punching Installation, Long Standby, No Plug-in Required) Two-way Intercom: Wifi Connection, Remote Doorbell Wireless, Realize Two-way Intercom Between Doorbell And Mobile Phone. Real-time Mobile Phone, Support Two-way Calls, Take Photos, Record, Take Care Of Your Family, And Make You More Comfortable. Durable: Charging Cycle Without Disassembly, Built-in 800 Mah Large Capacity Lithium-ion Battery, Normal Use For More Than 6 Months, Charging Time 1.5 Hours.