What should all diving lights be equipped with for easy retrieval?

Diving lights should be equipped with a lanyard with a fastening mechanism to ensure easy retrieval in the event they are dropped or become dislodged during a dive. This feature allows divers to secure their lighting equipment to their body or diving gear, significantly reducing the risk of losing the light in challenging conditions such as low visibility or water currents.

Using a lanyard helps not only in preventing accidental loss but also makes it easier to access the light quickly when needed, especially in emergency situations or when navigating in the dark. Having this safety measure is essential for maintaining awareness while diving, as good visibility can be crucial for safety and navigation.

While a battery indicator, carrying case, and emergency button serve important functions, they do not directly address the need for securing the light to prevent loss during a dive. Therefore, a lanyard with a fastening mechanism is the most practical feature for easy retrieval of diving lights.