Based on this product's specifications, here are some alternatives and similar models
Mobilis Protech Pack Shell Case for Dolphin CT40, 5-inch, Black
Summary description:
The Mobilis Protech Pack is a durable shell case designed specifically for the Dolphin CT40 mobile computer with a 5-inch screen. This protective cover features a monochromatic black finish and includes an integrated elastic hand strap and tripod mount compatibility for enhanced field usability. It provides reliable protection against daily wear and impacts, ensuring secure handling in professional environments.