1. Screen size: 3.5-inch HD display 2. Resolution: 480*272 3. Viewing Angle: 80 degrees 4. Power requirement: DC 5V 5. Battery: Built-in 3.7V/1500mAh lithium battery 6. Other special features: Supports up to 2 cameras 7. Image sensor: 1/3 inch color CMOS image sensor 8. Pixels: 1080P 9. Lens: EFL = 3.6mm. F = 2.8 10. 270 degrees around, 60 degrees up and down 11.IR LED type: 7 pieces IR LED / 850nm 12. Night vision distance: 5 meters 13. Power supply: DC 12V 14. Other special features: two-way speaker; A night light; Temperature detection