1. Lower Power and Ultra-long Standby Time
2. Wide Angle Lens - See clearly on every face at your door, never to be afraid to open the door.
3. IR Night Vision - Day or night, it allows you to take photography and record videos at any time.
4. Two-Way Audio with Noise Cancelling - Allows you to talk to your visitors wherever you are. And you can watch real-time videos on cellphone.
5. With Ding Dong/Chime: To notify the smartphone of the home owner when a guest arrives to the entrance of the door.
6. Note: No battery is shipped