The OtterBox Premium Pro Glass Privacy Guard Screen Protector and the OtterBox Glass Screen Protector (Product ID: 77-96191) have important differences:

## Compatibility and purpose
- Both are compatible with the iPhone 16 Pro Max, but the Premium Pro Glass Privacy Guard Screen Protector offers additional privacy protection features that make the image on the display unreadable to outsiders.

## Material and hardness
- Both screen protectors are made of aluminosilicate glass and have a 9H hardness, but the Premium Pro Glass Privacy Guard Screen Protector also contains antimicrobial technology and is made from more than 60% recycled material.

## Protective features
- The Premium Pro Glass Privacy Guard Screen Protector provides protection from fingerprints, scratches and offers a Drop+ protection feature that can withstand up to 6 feet. It also has a special privacy guard feature that makes the display unreadable to others.
- The OtterBox Glass Screen Protector (77-96191) also offers protection from scratches and drops, but without the added privacy protection feature.

## Installation and ease of use
- Both have a simple installation method, but the Premium Pro Glass Privacy Guard Screen Protector comes with a Quick & Easy Install Kit, which makes installation even more user-friendly.

These differences show that the Premium Pro Glass Privacy Guard Screen Protector offers additional functions such as privacy protection and antimicrobial technology that are not included in the standard OtterBox Glass Screen Protector.