Very powerful flashlight for its price, it cannot be compared to others in the same price category. It is relatively large in size compared to small flashlights that fit in your pocket. For example, the battery compartment has a plastic cylinder to securely hold the included 18650 battery, but it seems that by removing this plastic tube, the construction is made to accommodate a larger diameter and capacity battery, possibly a 21700 would fit fine.

Also, a note regarding the battery that comes with the flashlight, the capacity and duration are laughable, and even the capacity listed on the side (8800mAh) is incorrect and misleading. In my opinion, do yourself and the flashlight a favor and get a good branded high-capacity battery so you don't have to charge it constantly.

Due to its metal construction, it appears to be quite durable against drops and impacts, but I wouldn't trust it at all in water, rain, or even wet hands, as the rubber cover for the charging port doesn't have good contact and opens easily.

By the way, the charging port is Micro-USB.

There are three modes: maximum brightness, medium brightness, and strobe. The "SOS" mode mentioned in the flashlight's features is nowhere to be found, possibly it's a spelling mistake or a lazy copy-paste from the features of another product...