Feature 1 2 Way Audio: Equipped with high power speaker and sensitivity microphone, video conversation is clear and smooth. Support intelligent voice change, easy to deal with all kinds of situations. 2 HD Doorbell: Video doorbell with wide angle lens that let you see, hear, and speak to anyone from your phone, tablet, or PC. 3 Night and Day: Built in high power infrared sensor, with ICR infrared filter, doorbell can automatically switch day and night mode. Even in the dark, you'll clearly see the visitors, delivery personnel or possible intruders. 4 Remote Video Call: After visitors press the electronic doorbell, your phone will receive a notification. You can enter the phone video call interface, have a remote video. 5 Adjustable Volume: WiFi and Blue tooth connection, receiver placement isnot restricted. With multi gear adjustable volume, you can hear clearly in noisy environment, while not disturbing the family rest.Item Type: Video Doorbell CameraMaterial: ABS Connection Mode: Bluetooth and WiFi Perspective : 60 Night Vision Light: 850N night vision light Weight: Approx. 118g / 4.2ozPickup Distance: 3m / 9.8ftStorage: Cloud Doorbell Size: Approx. 73x46x25mm / 2.9x1.8x1.0inDoorbell Camera Battery: Built in lithium batteryBattery Capacity: 1200mAh (shipped with built in battery) Package List1 X Doorbell Camera 1 X Indoor Ring Machine 1 X Double Sided Tape 2 X Screw 2 X Plastic Expansion Tube 1 X Instruction Manual 1 X USB Cable