High definition clear video with 120° viewing angle, display the details in front of your door,reliable and practical. Disassembly free cycle charging, built-in lithium ion high-capacity battery, more than 3 months of normal use,Charging time 1.5 hours. 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. The doorbell can be controlled by APP, automatical work model, intelligent and portable.Portable in size and weight, convenient to install and remove. Equipped infrared night vision, automatically open at night.