Remote Video When visitors press the doorbell, the doorbell will push notification to the mobile phone, and you can can access the mobile phone video call screen to make video calls with visitors, checking the door situation at any time.Ultra HD & Wide Angle Video doorbell has built in high precision1080P camera, which can clearly record each picture, restore picture details. It also has wide angle, so you can see clearly all visitors in front of your door, no dead angle.Long Battery Life Visual doorbell is powered by a 1000mAh rechargeable battery, which can be used for one year after each full charge, no longer worry about charging and change battery frequently.Night Vision Doorbell camera has built-in high-power infrared night vision lamp, which can automatically switch between day and night mode. So you can see and shoot clearly even at night.