1Low Power Consumption: 1800mAh lithium ion battery, easy to use. Support USB or mobile power supply. 2Infrared Night Vision: Two 850nm infrared lights, infrared distance 12m/3.286.56ft, using PMW splitting technology, the night is clearer. 3Video Camera Mode: Support video mode or camera mode, automatic shutdown function, support manual image capture. 4Weatherproof: IP55 waterproof rating, it can be used even in rainy weather outdoors. 5Data Storage Mode: No stored data will be lost after power failure, maximum support 32G highspeed memory storage card. Item Type:Door Viewer Material: ABS+Zinc Alloy Use: Household Battery: 3.7V lithium battery 1800mah (built-in battery) USB Power Supply: DC 5V Image Sensor: 1/4in CMOS Camera Pixel: 1MP Effective Pixels: 1280 (H) x 720 (V) Minimum Illumination: 0.5Lux / F2.0 (colorful), 0.02Lux / F2.0 (black and white) White Balance: Automatic tracking white balance Gain Control: Automatic Signal To Noise Ratio: > 50dB Backlight Compensation: On Wide Dynamic: Yes Electronic Shutter: 1 / 4-1 / 10,000s /night Mode: Filter the color to black Focal Length: 2.4mm Horizontal Viewing Angle: 140 Number Of Aperture: F2.0 Infrared Night Vision Light: 2pcs approx. 3mm/0.12in flat head 90 850 infrared light Automatic Power Off: Off, 10s, 20s, 30s Language: Chinese, English Display Setting: On/off Recording Time: 10s, 20s, 30s Power-off Memory: Support Default Setting: Support Ringtone Setting: Built-in 4 ringtones Volume Setting: 3 levels of volume optional LCD Screen Size: 4.3in LCD Screen Resolution: 480 x 272 Memory Card: Maximum support 32G Maximum Image Size: 1280 x 720 Frame Rate: 50HZ, 25 frames (1280 x 720P) Video Compression: M-JPEG Audio Compression: G.711 / 16kbps Waterproof Rating: IP55 Support Door Thickness: Approx. 40-110mm/ 1.58-4.33in Support Door Hole Size: Approx. 15-50mm/ 0.59-1.97in 1 x Inner Door Machine 1 x Outer Door Viewer 1 x Fixed Plate 6 x Screw 1 x USB Cable 1 x Manual Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.