Worked perfectly
Removed the biggest stone I have ever seen in under a minute. And only on medium setting!  Been battling it for days. You’ll still need a separate flashlight, but this was a godsend. A bit pricey but gave me relief immediately. Also heard reports of pain, but I did this myself while using a flashlight and both light and medium settings were painless. Avoid high setting if possible, and if you can get a friend to help even better.
Rating: 5 stars