Features: 3.5inch super bright TFT LCD display screen. Low power consumption, 120 degree angles high definition wide screen image. It has the function of 24-hour security monitoring. With night vision infrared function. Beautiful appearance, easy to install an use. Specification: Material: ABS Weight: 300g/10.6oz Sensor: 300k pixels CMOS active digital image sensor Zoom: 3X digital zoom Doorbell: doorbell function, 32 types ringtone to choose Micro SD card socket: support Max. 32GB Don't Disturb: The doorbell won't ring if choose this function Infrared: 3pcs IR LED for night vision, LED will turn on automatically under poor light. Photo taking: Automatically taking and saving photos on Micro SD card when visitors press doorbell button. Video Recording: Press Video button, the device will record video. Repeat to press Video button, it will stop the video recording. Review: Press review button to review video or photos on the device. Language: English, French, Spanish, Italian, Arabic, Turkish, Russia, Simple Chinese. (8 languages) Power: 4* AA batteries (NOT included) Date and time: Date and time will be shown on the photos or video if you choose such function. Low voltage: Power icon will twinkle when in low battery. Barrel diameter: 14-35mm/0.6-1.4inch Door thickness: 39-100mm/1.5-3.9inch Product size: 120*95*14mm/4.7*3.7*0.6inch Package size: 210*200*54mm/8.3*7.9*2.1inch Package List: 1 x Doorbell Indoor Unit 1 x Doorbell Outdoor Unit 1Set x Mounting Screws 1 x Back Splint 1 x User Manual