Features: Remote Control and Easy Install: Installation is simple mount the device with the included mounting tools. A digital visual display of your front door can be viewed on your phone screen. Night Vision: The wireless doorbell camera has infrared lights and allows you see what is happening in front of your door at night. Long Time Standby: Built in large capacity battery combined with low power consumption design greatly improves the endurance. Say goodbye to frequent battery replacement and the permanent endurance is 365 days. Free Cloud Storage: Once the visitor rings the Video doorbell wireless you can access live view it will auto capture at the same time and save image in cloud you can playback visiting records in your phone. Convenient Design: No wiring easy installation built-in WiFi module support multi-device connection Dingdong doorbell never miss a visitor again! Notice: Actual color may be slightly different from the image due to different display and light effect. Please allow 1-3cm deviation due to manual measurement. Specifications: Material: Plastic Battery: 800mah Power supply voltage: 3.7V Doorbell size/weight: 85*53*22mm/65.7g Ding-dong device size/weight: 55*42*25mm/23.3g Charging time: 1.5h includes: 1 * Smart Doorbell 1 * Ding-dong Device 1 * USB Charging Cable 1 * Installation Sticker 1 * Manual 1 * Screw "