M4300A 4.3 inch Display Screen 3.0MP Camera Video Smart Doorbell, Support TF Card (32GB Max) & Motion Detection & Infrared Night Vision, M4300A1. Zinc alloy design, not afraid of pry is not afraid to hit to ensure long term use. 2. Not only video can be recorded. 3. HD color display large screen, 4. 3 inch display, do not worry about the child hight is not enough, older eyesight is not good. 4. The wide viewing angle makes the thief no escape. 5. Memory card maximum support 32GB, full memory after the new photos will automatically cover the time. 6. Suitable for door thickness: 45 95mm.