It may be dubbed by some as the nerdiest flashlight, but the HexBright FLEX offers superb illumination and utility. It's a programmable (can be done via USB on a PC or a Mac) flashlight, meaning you're able to customize parameters such as its brightness and strobe frequency, among others. And even if you're not well-versed in programming, you can always go online and use the uploaded programs created by other HexBright users. It's pure brilliance (in more ways than one).