Features: 1. Voice call, video intercom UBOX stable and smooth APP system. 2. When you are away, your home is in your hands. The mobile phone can be woken up for active viewing, monitoring the home, pressing the doorbell to push information, and viewing it in real time. 3. 166° super wide angle, small lens and large field of view. 4. 1280 x 720 high-definition resolution, 166° super wide-angle lens, see the outside scene clearly. 5. High-definition infrared night vision guards 24 hours a day. 6. Using high-efficiency infrared light compensation, the picture can be clearly seen even at night when it is high and windys. 7. Long standby time, more than 8 months standby time. 8. This product adopts ultra-low power consumption technology, built-in high-quality lithium battery, in low power consumption mode, the standby time is more than 8 months. 9. Super strong wireless signal to ensure clear and smooth picture. 10. No wiring, easy installation, built-in WiFi module, stable transmission, reliable connection, no need to worry about. 11. signal problems caused by the distance between the doorbell and the client is too far. 12. Agile motion detections + extremely fast information push (intelligent anti-theft). 13. When an uninvited guest enters the sensing range, the device will push the information to the mobile phone extremely quickly, so that the wind and grass have nowhere to hide, and the product itself is anti-theft. 14. Support multi-device connection Android, IOS, Windows. 15. Card can be inserted, memory card supports up to 32G memory card. 16. Support two 18650 batteries for power supply. 17. It can be matched with indoor Ding Dong doorbells. Specification: Power supply: 18650 battery (Not included). Power supply voltage: 3.7 (V). Ringtone: dingdong. Application: home, office, villa. Package Included: 1 x WIFI Doorbell. 1 x Manual