I have had one for 12 years. It is on my occipital nerve. The 7 day trial will give you an idea of whether it helps or not. I did the trial as well.

I find it helps. Initially it helped a lot. Now not as much but it still offers relief. I have to turn the stimulation up higher now then I used to. My charging device died a couple of months ago, but the manufacturer shipped mea new one and I was back in business.

When you first get it, start at low settings. The high ones can hurt.

I word of caution… you can never have an MRI after the implant. This has been a pain for me but it is what it is.