Camera design

•  Bullet (8)
•  Dome (1)
•  Eyeball (6)

Pixel Resolution

•  2 - 4 MP (5)
•  4 - 8 MP (1)
•  More than 8 MP (1)

Microphone

•  Built-in (7)
•  Other (18)

Environment

•  Outdoor (6)