4XEM 4X-IP7134. Maximum resolution: 640 x 480 pixels, Video formats supported: MJPEG & MPEG-4, Frame rate: 30 fps. Minimum illumination: 0.4 lx, Viewing angle, horizontal: 49.6 °, Viewing angle, vertical: 38.2 °. Sensor type: CMOS, Optical sensor size: 1/0.157 mm (1/4 "). Built-in processor: VVTK-1000 SoC. Flash memory: 4 MB, Internal memory: 32 MB