1、Wide Field of View: Built in 2MP ultra clear lens, super large panoramic wide angle, wide range, panoramic view. Also supports 5 meter infrared night vision since it is wquipped with 2pcs high power infrared light and combined with ICR infrared filters, it automatically switches between day and night modes. Even if you can't see your fingers within 5 meters, you can still see clearly. 2、Real Time Video Viewing: On duty 24 hours a day, access the mobile APP to view real time updates at the entrance anytime, anywhere. Equipped with a high sensitivity microphone and high power speaker, you can start a video call with just 1 click, receive express delivery or takeout with peace of mind. It's safer at home and more reassuring when going out. 3、PIR Detection: The sensing camera is equipped with a PIR detection sensor, which can detect within a maximum range of 5 meters at the entrance for 24 hours. After detecting the movement, the camera begins to take videos to ensure the safety of the entrance. 4、Storage and Long Range: Secure history playback without missing every frame, cloud storage service, safe and reliable. Ultra long battery life with built in 4400mAh lithium battery, low power consumption WiFi, and more energy saving. 5、Easy Installation: All wireless, no wiring troubles, long battery life, no need to damage the decoration, two installation methods, strong adhesive fixation, screw fixation, easy to use and more convenient. 6、Simple Charging: When the USB charging doorbell is out of power, it can be powered by the reverse charging function of the power bank and phone through the USB data cable. Item Type: Video Doorbell Model: W3 Material: ABS Sensor: 1080P COMS sensor Lens: 6G wide angle 2.2mm lens. Angle of View: 120° horizontal, 150° diagonal . Video Stream: Main stream 1280 x 720, 15fps. Sub stream 640 x 360, 15fps. CMOS: Supports automatic white balance, automatic gain control, and automatic backlight compensation. System: For Lite OS. Standby Time: About 6 months. 10 wakeups per day, 30 seconds per session. Day Night Conversion: Automatic switching of dual filters. Infrared Distance: 850nm infrared, with limited distance of 5m. Network Configuration: QR code distribution network, sound wave, WiFi fast connection. PIR Detection: Supports PIR detection wake up. Audio Coding Standards: AAC and G.726. Audio Input and Output: -38dB microphone, built in speaker. Recording: Automatic recording, event recording. WIFI: 2.4GHz Network Protocols: TCP/IP, HTTP, TCP, UDP, SMTP, DHCP, DNS, PDP. Wireless: WIFI082.11b/g/n wireless network. Passive Infrared Detection: Supporting Adaptive Bit Rate: Supporting 2 Way Audio: Supporting Sleep Time: Adjustable for 15s, 30s, 60s. Voice Call: Supporting Remote Wake Up: Supporting PIR Wake Up: Supporting Mobile APP: For Ubox, for IOS 11.0, for Android 6.0 or above. Storage: Memory card, shipped without memory card. Power Supply: 2 x built in 3.7V lithium battery with 4400mAh capacity. 1 x WiFi Doorbell 1 x USB Plug Indoor Bell 1 x USB Charging Cable 1 x Installation Sticker 1 x Reminder Sticker 1 x English User Manual 5 x Screw 5 x Wall Plug 1 x Screwdriver