1PC 144x74.5x32.3mm wireless smart doorbell for monitoring home security, suitable for apartment/villa Feature 1.The video door intercom bell is support two way audio, When somebody push the doorbell or PIR detected alarm, your mobile app will receive an alarm video call directly, you can just answer the alarm call to see the video call directly from you mobile app and talk in real time. 2.it is HD Resolution with 720p adopted cmos chipset. You may enjoy the excellent image full hd video and picture from this door bell for home surveillance security.Wireless doorphone doorbell camera is for apartment or back yard. 3.It is not only a wireless intercoms doorbell for you, and it is also a security ip camera for your home. Multi functions that includes wireless, two way audio,motion sensor support both andriod and ios system of mobile. 4.Support APP Function, it can be applied for Android, iphone, ipad APP Software. 5.Support night vision and built-in IR-CUT technology, available day and night. 6.The doorbell comes with 7 days of free cloud storage, 7 days of unlimited coverage, Support memory card. Note: some of which are in the picture are what you get Specification Material: ABS Size: 144x74.5x32.3mm Resolution: 1280*720 Field of Angle View: 140 IR LED: 6*850mm Wi-Fi: IEEE 802 11 b/g/n Audio: Two-way Talk With Noise Cancellation Recording: Device SD Card Recording(20 Seconds) Storage: 8G/16G/32G(Not Included) Power Source: 3 x 18650 Specification Batteries Monitoring: Device Button, Motion Detection, Remote Live View Notification Function: Push Notifications within 2 second Device Wakeup: Within 600 ms Power Consumption: Power Consumption Standby 200?A, Working 170mA