So far I have used one Nerivio device fully and just received my first refill. I definitely notice relief in my migraine while using the device but, so far, haven’t noticed much in the way of long-term relief. However, even just the 45-60 mins of relief I do get from it is worth it for me at this point in my no-medications-work-for-me journey. My only feedback currently deals with the refill process. I wish that the device itself was rechargeable instead of having to completely replace it. I know that the electrodes would need replacing over time but I also know most others of these types of devices are set up to get refills of electrodes rather than replacing the device completely. I also wish that, instead of receiving a completely new kit, they would just send a new device- the armband and carrying pouch don’t need to be replaced each month. It feels wasteful to have another armband and pouch just sitting around collecting dust. It would also be helpful if they would include a return envelope for recycling your device with your refill device rather than having to email separately to request one. Other than those small potential improvements, I have been getting some relief so I will definitely keep using it and seeing what happens!