It is a product of K&F CONCEPT. [What's the selling point?] First of all, the power is supplied by the included solar panel, which eliminates the need for wiring. Regardless of whether it is wiring or an outdoor socket, the wiring process is very troublesome, and if you need to drill a hole in the wall to do the wiring, you need to hire a contractor to do the work. It's been 3 days since I installed it, and the built-in battery is currently full due to the fine weather. The image has been partially reorganized for privacy protection.) Although it is specified to be 1920x1080, once the image on the smartphone is enlarged by pinching, jaggedness occurs, so at least the image received via the Internet is not very high quality. Images can be saved to the SD card in the slot of the main unit, so the quality may be high, but (even if it is) it is realistic to take out the SD card and see the recorded images each time. If installed at the recommended height (2-3m) during the day, it is still possible to fully check the facial features of the person in the camera. However, this only seems to be the case when a moving object is detected. When a moving object is detected, the light flashes and it seems to shoot in color. [Sound quality] Not good enough They say you can talk through the camera, but when I mounted it on the wall facing the street in front of my house, I couldn't hear a moving car, but a howling sound, so I decided to use this device. It seems a little difficult to have a conversation through the camera. [Motion detection] Excellent. If 6 is changed to 8 or 9, the detection rate increases, but for practical purposes, this level is sufficient.In addition, at this time, when a moving object is detected, the video is saved to the main unit's SD card. It is saved and you can call it up and check it on your smartphone. If you specify the date on this review screen, the time and snapshots are displayed in a row, so it is easy to use. However, you can pinch the screen while the called up video is playing. If you do this, you cannot move the screen position, so you can only zoom in on the center. However, I don't think there are many people in Japan who drill a hole in the wall of their house and attach the camera to it.