When comparing Carl Zeiss Smart Glass vs Vuzix M300, the Slant community recommends Vuzix M300 for most people. In the question“What are the best smart glasses?” Vuzix M300 is ranked 4th while Carl Zeiss Smart Glass is ranked 5th. The most important reason people chose Vuzix M300 is:
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.
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Pros
Pro Reflective display
Instead of shining light directly into your eyes, the light simply reflects off the glass, meaning its less obtrusive.
Pro Adaptable technology
The technology used in the Carl Zeiss Smart Glasses project can be transferred to normal glasses, or wherever curved glass is present. This solves the fundamental issue with Google Glass, which required an out-of-place flat piece of glass to function.
Pro Low-profile
The glasses look very much like regular, non-smart glasses.
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.
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 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 Rugged
These glasses are not only water and dust resistant, but also able to withstand drops of up to 8ft (about 2.5m).
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 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.
Cons
Con Hardware only (for now)
Carl Zeiss is a company that makes optics, and doesn't work on software. This is only a hardware solution, with no software implementation yet. Currently Carl Zeiss is seeking a software partner, however this will take time for them to develop a complete product once they do find a suitable partner.
Con Not yet available
These glasses are currently in prototype stage. It's not clear when and even if they will go into production.
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.