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Pro Hot swappable batteries
If the battery is running low, you can replace it with a fully charged battery without needing to turn off the glasses. Larger extended batteries are also available, which can increase the battery life to up to 12 hours of continuous use. These larger batteries can be mounted on a belt instead of in the frames to be more ergonomic.
These glasses are not only water and dust resistant, but also able to withstand drops of up to 8ft (about 2.5m).
Pro Built-in features
While apps are available, some built in features are very welcome. Out of the box it has the ability to record video and take pictures (and scan barcodes), manage your calendar, track events, and connect with your phone for notifications.
There is also built in GPS as well as head tracking. GPS will allow for precise location information, and the head tracking in combination will pinpoint exactly where you are and where you're looking. This allows for augmented reality (AR), which can remind electricians which wires are live, or display other relevant information when looking at an object in the real world.
Pro Touchpad controls
On the side of the M300 is a touchpad which is the primary input device, but is accompanied by physical buttons.
Pro Multi-platform compatibility
While the Vuzix itself runs Android, it is compatible with both Android and iOS operating systems. This broadens its consumer base, and will allow (businesses especially) more flexibility when using it.
Pro Configurable mounting options
The M300 can be mounted to the frames of regular glasses, as well as safety glasses, headbands, hard hats and headsets. This makes it very versatile.
Con Poor battery life
The default compact battery will only provide a battery life around 2 hours of continuous use.
Con Designed for enterprise
While not inherently bad, these smart glasses aren't designed for consumers. They won't have the same support for apps and other useful features for general consumers, and will likely be more specialized for enterprise.