Conclusion: The device works great, is easy to use and most importantly, relieves pain.
I am always against writing a customer review immediately after purchase, which is why I tested the device for several weeks for severe knee pain. Of course, it doesn't cure knee osteoarthritis, but when used regularly, it really alleviates the pain. 3x times a day for 10 minutes and that over 2 weeks = pain goes away, only dampened there. So something happens in the knee, now I only use the device when needed and the effect lasts. The automatic program is completely sufficient, I just turned on the infrared heat more, it's just good. And when the knee “whines” again after a long day standing or after exercising, put on the equipment and there is relaxation, relief.