Features: Upgrade your home security and get a smart wireless video doorbell. This doorbell is equipped with 720p HD video with 166 panoramic wide viewing angle and infrared night vision mode. This smart doorbell features a built-in microphone and intercom speaker which allows for two-way audio communication for speaking to visitors. It also has a smart PIR motion sensor that responds whenever any motion is detected and automatically sends an alert to your smartphone. To get notifications, install APP (WOWCAM), and fill in the required information to set up an account. This smart doorbell is powered by using 18650 batteries that give you up to 6 months of battery life. Specifications: Color: Silver, Gray Material: ABS Size: 7.5 * 3.3 * 14.4cm Weight: 190g Usage Time: up to 6 months Battery Information: 3 * 18650 Battery (not include) APP: WOWCAM Resolution: 1280 * 720 Viewing Angle: 166 Infrared Light: 6pcs, 850mm Video: TF Card (15 sec) Package Includes: 1 x Smart Doorbell 1 x User Manual