Computer Screen protectors are a must. All the dive manufactures have specific ones for their computers. Your new dive computer will usually come with one in the box. Whether it’s a lens film or the plastic ones, during the dive, the display of the dive computer is somewhat vulnerable for getting scratched or damaged. Using a retractor or the BCD’s shoulder hose holder will also help keep your computer from dragging along the bottom. You’ll also be protecting the reef at the same time from damage. After a while, your dive gauge guard will be scratched up enough, you won’t be able to read your computer screen while on the deck. That’s a good thing. It means the lens protector has done its job. Time to purchase a new one. They are easy to remove and install. So don’t be a screen scrooge… Protect your Investment.