I don't know what you're expecting from a $2.70 flashlight, but this should be it. 10/10 worked for me which means Q/C probably exists at the factory. Unless you run a 3.7v battery you will not get the rated lumens. A single AA 1.5v will net you maybe 50lm. O-rings for water sealing are very poor quality. There is dielectric grease on the threads, but not spread. Manufacturer cuts corners to get a low cost light, like I said, what do you expect?I purchased these as backups for friends/kids when they don't have one. They'll do the job.
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