Pros: Single AA battery eliminates 3 AAA battery cage, a point of failure on similar flashlights. Very solid construction. Really bright focusing beam.

Cons: The front lens was terribly dirty, inside and out - but it easily unscrewed and could be cleaned. It has 3 modes: bright, dimmed and blinking. After you turn it off, it comes on in the next mode, so not where you preferred using it. Pressing the switch 2 more times gets you squared away. But it is an annoying switching mode that requires using the switch 3 times to get the mode that you likely want. The switches are probably the most failure prone part of these little flashlights, so those extra 2 clicks are troublesome and will not promote along life.

Overall Review: I think most users will find the sharp edged side clip more annoying than useful. Fortunately it is fastened on with 2 screws requiring a very unusually sized allen wrench (or pliers work) to remove them. I have a dozen similar flashlights, about half of which failed after a few dozens of uses. This one seems better made than all the rest - but only time will tell.

Pros: 7.9 GB of error free flash memory

Cons: Runs at USB 2.0 speeds. Using HDTune Pro 5.5, I got the following speeds on a Win 8.1 Core i7 machine with USB 3.0 connections: Read: 30 MBps Write: 9 MBps 4KB File IO: 1100 IOPS These rates are typical of a USB2 flash drive. For the skeptical, I have measured a 16 GB Team USB3.0 flash drive in the same port that had 4 to 10 times the above rates. So the test was not computer port limited.

Overall Review: This unit looks like USB 2.0 speed flash memory parts that have just been configured to operate on a USB 3.0 port. Too had Newegg does not have a way to show the HD Tune Pro graphs. Looks like video is the rage now.

Pros: I got two units. One flashlight works very well. This flash has one AA battery which is better than the usual 3 AAA batteries in my opinion.

Cons: The second flashlight works at 30% brightness. It is not the switch or battery as I can interchange those with the good flash and the defective one is still defective.

Overall Review: The QC on these and other similar flashlights is generally terrible.