High definition clear video with 90 viewing angle, display the details in front of your door,reliable and practical. Record important moments, no longer have to worry about losing your delivery, the elderly and children are no longer afraid of being alone at home. 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. Disassembly free cycle charging, built-in 1000mAh 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, Works Efficiently Day and Night and Turn on Night Vision Automatically , Rainproof, waterproof and anti-theft, Suitable for All Kinds of Doors to make your life more convenient. Support cloud storage. The Doorbell can be video call by APP,and view the captured pictures by APP,Start work after ringing the bell, intelligent and portable.Portable in size and weight, convenient to install and remove.