The waterproof protective cap is made out of hard anodized aluminum containing a high quality engraving. It is also available with a so called energy container which contains an extra spare battery in case the battery in use gets low while hunting.
| Version | with Energy Container | without Energy Container |
| 1-8x24 Exos | X | |
| Polar T96 Series | X | X |
| Zenith Series | X | X |
| Klassik Series | X | X |