Live video viewing,No need for passive triggering, watch anytime, anywhere Remote video call,Even if you are not at home, you can have a video call with visitors with just one click, with high fidelity and no lag. 149 degree visual lens, wide field of view, almost See the whole door clearly Someone staying within 1 to 5 meters of the door triggers motion detection.Automatically notify the mobile phone APP. All-day monitoring to prevent theft. Even if it is dark, you can still see clearly,Built-in 6 starlight night vision lights, automatically switch between day and night mode according to the brightness of the surrounding light Product Name: Smart Video Doorbell Product size: 145x54x35mm WiFi frequency: 2.4GHz Intercom mode: Support video intercom Detection distance: within 5 meters Message reminder: support alarm notification 9000mAh battery capacity: (battery life 90-150 days) Infrared night vision: support Sensing angle: 149 degrees diagonal, 118 degrees horizontal Storage method: 30 days of free cloud storage, optional memory card without any additional fees(with 32g card) Installation method: The doorbell is fixed to the wall or door with glue or screws With 32g card Colour:As Shown Material:ABS Package Contents: 1set * doorbell