1. Very easy to charge at any time, no require charging line, nor disassemble. National patent design-External Magnetic Charging Mode. 2. Extra Flashlight Power Bank inside, it can charge the electronic products like mobile phones etc., also use as a flashlight with a continuous lighting time up to 1,300 minutes. 3. 4.5-inch high-definition screen, 840*480 pixels, tempered glass protection screen. 4. Zinc alloy anti-prying camera, 2.3 megapixel high-definition lens. 5. Large capacity lithium battery, long standby time, smart photo/video, large capacity TF card. 6. High-definition infrared night vision, 160° visible wide angle, 8 adjustable focal lengths. 7. Personalized settings: Factory Setting, Do not Disturb, Mobile Detection Time, Standby Time, Language etc.. 8. DIY installation, suitable for various of material doors.