1. Screen size: 3.5 inch TFT LCD display 2. Camera pixel: 2MP HD 3. Visual angle: 170 degrees wide angle 4. Camera type: Micro hidden camera 5. Power supply: 4 x AAA batteries (not included) 6. Support door thickness: 35-110mm 7. Door hole diameter: 13-28mm 8. Material: Aluminum alloy outer machine, sturdy and durable
