3 stars because it's not for everyone!
Having placed 3 cameras in different locations, those who want to buy it should know the following:
Positives:
1. they connect directly to WiFi
2. immediate installation without wires, you charge it and it works right away.
3. good connectivity and image
4. Immediate live streaming! Live image of good quality with sound and microphone to talk.
Good capacity, (3 months and they haven't even reached 15% of the disk)
Negatives:
1. The main negative is that the cameras are unsuitable to be placed in areas with movement, near roads with continuous car traffic or even in a pool area! The reflection from the water, the sun, and the car lights at night constantly gives false motion resulting in battery drain and many false events! The AI they advertise needs a lot of work still! There is a setting that only detects people, but this way we miss cars, animals, license plates, etc.!
2. They have a delay of about 2 seconds! If a motorcycle or car passes by a bit quickly, we can't see who it was. Since they only record when they see movement, they need improvement there!
3. The placement must be in a spot with strong sunlight, which limits you if it's a wall that doesn't get sunlight or only gets it at an angle, so there needs to be a way to charge it periodically with a USB cable.

We have installed it for two months now. The sensor detects motion, but if something passes quickly in front of it (e.g., a car), it doesn't manage to take a photo with the object in it (probably by 2 seconds, because it captures the back of the sliding trucks). The all motions setting seems to be more sensitive than the only humans setting. It detects people at less than 7 meters. The high-resolution video stutters during playback. The 1070p resolution is more than sufficient for a clear image and facial features. The app (only in English) is good, and the option to send a notification with a snapshot (thumbnail) to the phone is very convenient. The two-way communication is done by continuously pressing the microphone, and you can't hear what they are saying at the location of the camera. Without sunlight, the battery drained after a month. For the use I got it for, it's okay because it detects motion and people well, sends notifications immediately, and doesn't need charging when in the sun. However, the app could be faster to open to see what's happening at the location live.