7.83Hz Schumann Wave Resonance Generator, Ultra-Low Frequency Pulse Generator, 0.01Hz~200000Hz Adjustable Sine Wave Resonance Generator, USB Powered Schumann Generator, USB Cable Included

This resonance generator is simple to use and works exactly as described. Just plug it in, set your desired frequency, and let it run—no complicated setup required. The signals are clean, and the screen has a backlight for easy visibility. It could be a placebo effect, but I feel like I’ve noticed a positive shift in my mood when it’s on. I’m excited to keep continuing to play around with the frequencies!

This little gadget does exactly what it promises—clean sin and square waves, no drama. You can see from the pictures (because who doesn’t love proof?) that it delivers. I cranked it up to 90,000Hz, which is either really impressive or just an arbitrary number I decided to test. Not sure what the actual max is—maybe it stops at "too high" or "you’ve gone too far, buddy."No directions included, but if you can press buttons and possess the patience of a person assembling IKEA furniture, you’ll be fine. Just punch in your frequency, hit “OK” (bottom left button, not a self-destruct switch, I promise), and voilà!Will this make me feel better? No clue. But does it faithfully spit out the requested frequencies? Absolutely. And really, that’s all we can ask for in this chaotic world.

My husband loves this, says it works great and is great quality- perfect- exactly what he was looking for!

Notice nothing. No improvement, the thing doesn't make a sound, how would anyone know it works?

The media could not be loaded. Im not sure if it's working or not? It's lit up and shows frequency but it doesn't make a sound. Is that normal? I just need more information to make a "sound" assessment.

Clean signals. It does what it says. You can see from the pictures that it does create clean sin and square waves. I had it up to 90,000Htz. I'm not sure what the max is, but it does have a max upper limit. No directions, but all you have to do is input the desired frequency and press okay (left bottom corner button). I don't know if it will make me feel better, but it does as it says and outputs the stated frequency.

hard review. i have gotten two of these. one worked fine, one didn't last more than three times and the audio output failed. one included a plastic box but the box had the holes in the wrong place and the cover fell out if it was mounted for the cover to open from the bottom. instructions are terrible for the first one and non-existent for the second. if you get it remember that to shut it off you must go back to input on the screen and then turn it off or else the last signal will continue until a new frequency is entered...neither would fully shut down with off switch but screen goes blank so you think it is off.

Interesting product which is easy to use and good value for money.