This is a very good product. In this world of self-testing and/or self-healing consumer products, this is a must. There are many products that are significantly more expensive, many and sometimes almost 90% of the functions do not use them. The most valuable tool is your mind combined with intelligent thinking backed by intellectual logical experience. In itself, this is a high-quality product that cannot be compared with inferior quality. That means you can't tell it's cheap or toy based on the price etc. Why spit out hundreds or thousands of dollars when this product does what you want to know about. item under repair