Waterproof Battery Wireless Video Door Phone Doorbell With Speaker Phone Intercom System 720P Night Vision PIR Camera Doorphone|Doorbell(black) Feature: 2.4G WIFI and ultra-low power technology realize the true wireless technology. 720P HD solution and 166-degree wide angel view allow you can see the visitors no matter you are in anywhere and anytime. Advanced PIR technology can detect the suspicious person around your door and push video via APP to your smartphone. The camera auto switch day and night. Use 2 pieces of 18650 batteries-Ultra long time standby Two-way talkback Speed interaction Video Doorbell Camera Specification: -Resolution:1280*720 -Lens:166° -IR night vision: 6 pieces 850mm -WIFI standard: IEEE802.11B/G/N, Wi-Fi Signal Frequency: 2.4GHz -Audio: Support talkback -Record: Micro SD card. -Memory: 8GB/16GB/32GB(The SD Card not include) -Notification: Within 2S -Wake-up time: Within 600ms -Wake-up: mode button -PIR wake-up/mobile phone wake up