Summary: Having read some positive reviews about the optics of this monocular I thought it was worth $25 to find out. It might be good for children, or someone who will use it near water. Other than that, I would save up another $25 and get a Vortex solo (also waterproof) for $50.
Summary: bought two (2). The first one lasted just a week when it's eyepiece was detached from the body when my son tried to take the monocular from my pocket. The second one is still intact because I haven't used it all.
Summary: I compared this to two other monoculars that I am now returning because this one was so superior. Sure it costs a bit more and the specs are obscure but they are much better than expected. It does not pay to get too cheap, even at this inexpensive level, if you won't like using it.
Summary: This product is very practical. This is an important gadget in my EDC kit. It has a good cost benefit associated with the excellent support of Optics Planet that replaced a defective product quickly guaranteeing 100% satisfaction.