Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poorly-designed product

I purchased the Homedics Sound Spa since I thought it would be nice to have while traveling. The product has not lived up to my expectations. I have used it approximately 30 times since purchasing the item about one year ago. After five uses, the AC adapter failed to work. Now the product will not turn on, even with brand new batteries. At most, I get a brief flicker of green from the power light, then the product stops responding. While the product is reasonably priced, it doesn't seem like too much to ask for more than one year of relatively light usage.