It's a good toy, not much good for troubleshooting problem because you have no control of direction or focus
Only 4/5 stars, tho, as it DOES have limitations, and doesn't work with the vast majority of phones
(The 90 degree mirror was a good idea, but doesn't affix to it very well, and the unit has no independent rotation, other than twisting the whole thing
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I received this item free or heavily discounted in exchange for my honest opinion
The device itself is worth about 5 dollars in my opinion