Good morning Joanland
I have a Boston Scientific spinal cord stimulator it has been truly amazing for me. I don't know but I'm guessing they all work. Similarly as to you can pick the frequency and intensity and so on on a programmable remote control that makes battery life Paramount I've had my device implanted for about 25 years And the remote will still go 1 to 2 weeks for it needs charging in my back. The battery inside me can last last 4 to 6 weeks or more before needing charging. One thing Boston Scientific did. I don't know if they all do is they can do a trial with an external unit so you know what you get for relief before you have it implanted in your body. Personally, if I only had tingling or numbness I would not do it. My pain was severe. Felt like I was walking with a broken bone in my foot or that I had gasoline poured on them and lit on fire. I used to take 1,300 mg of gabapentin also Lyrica duloxetine meloxicam Diclofenac and many many others And in combination also CBD oil which did nothing for pain, just mental clouding. The others manage the pain but I was so sleepy all the time I was just existing.
I hope this helps. If you have any specific questions, I only look here occasionally but would be happy to answer any specific questions you might have