a. HD 720p image quality
b. See your guests from your mobile devices when you not at home
c. Talk to your visitors
d. Support 1m night vision range
e. Upload customized music
f. Message push when somebody outside door
g. One-key defense for PIR detection recording
h. Standard 4G built-in storage, up to 32GB for option.
i. Support remote viewing recorded videos
j. Door unlock function