4.5 inch IR Night Vision Motion Detection Video Door Standby Visual Peephole Viewer 4.5-inch high-definition display, cat-eye head anti-pry design 2 million reputable safety cameras 145 degree ultra-wide large angle Super evening vision operate Doorbell don't disturb function PIR motion detection Human physique sensing Photo, audio and video recording, video message operate 2500MAH broad means lithium battery power supply. A form of tune ringtones to decide from, a number of languages Ringtone length would be adjusted Maximum support 32G reminiscence card Support door thickness 30-110MM Door hole range: 15-38MM Packing list: Indoor host *1 Outdoor handset*1 Lithium battery*1 USB charging cable*1 Metal striking board*1 Screw bag*1 English operation guide*1" (Without reminiscence card) Notes: 1. Manual measuring, please enable 1 ~ 3mm error, thank you. 2. Due to the adaptation between diverse monitors, the image won't mirror the particular colour of the item. We warrantly the style is the same as proven within the picture.