I handed it back to the store because of poor-quality optics and a broken fastening thread (the thread remained at the very end) - the length of the bolt of my photo tripod was not enough for fasteners. I recommend not looking at cheap Chinese, but choosing something from LZOS, KOMZ or YUKON - they also have their drawbacks, errors and features, but everything is known in comparison - for the same price we get a normal optical device with a watchable picture, and not something "dark". It's better to be than to seem.
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