WIFI connection, no wire needs, achieve a two way intercoms between the doorbell and mobile phone.Real-time mobile phone, support two-way calls, photos, recording, caring for your family makes you more secure High definition clear video with 65° viewing angle, display the details in front of your door,reliable and practical Disassembly free cycle charging, built-in 800MAH lithium ion high-capacity battery, more than 6 months of normal use,Charging time 1.5 hours Equipped infrared night vision, automatically open at night Smart Wireless Doorbell, 65-degree High-definition Clear Viewing Angle, Wifi Connection Two-way Intercom, Equipped with Infrared Night Vision, App-controlled Automatic Mode Work The doorbell can be controlled by APP, automatical work model, intelligent and portable.Portable in size and weight, convenient to install and remove