I have had chronic migraines since I was a young child, so finding a diverse range of ways to help headaches is a personal quest of mine. When I saw this product offered, I knew I had to try it. In total, this device works well for what it is and I use it whenever I have a migraine, but the buttons being a little less intuitive than I would like, the vocal UI and audio in general not being perfect are what demote this product to four out of five stars for me.