Q: My Sordin Supreme Hearing protection rattles when moving, how can I stop this?
A: We have found this to be caused by some type of AAA batteries being a little too small for the battery compartment. When the batteries move about they make a noise and it can appear that something is loose.
A good example of this is the Varta Brand of AAA Batteries which have a recessed negative terminal making them too short and able to move within the battery compartment.
Below is a photo showing the difference between a Varta battery (recessed negative terminal) and the Utilitech which has a protruding negative terminal/
The simple solution is to try another brand of battery.