This product is inexpensive, lightweight, and easily carried. I only expect a medium level of performance from this product. They have not failed to meet those expectations. I wanted this product because they will be treated roughly and if they break, I will not be out a great deal of money to replace them. They have performed well so far. If you purchase these, do not expect the clerity and durabiity that you may get from more expensive models. Keep in mind you get what you pay for and you will be satisfied with this product.
Pros: Inexpensive, small size, light weight
This review was written in the old system and had content requirements that are different than reviews written today.