HydroWave Herring Expansion Module

The Herring Expansion Module is for use in the Hydrowave system. By simply plugging the card into the expansion port in the bottom of the Hydrowave unit, you will add the 6 additional sounds to your Hydrowave's playlist. With more sound choices, you're sure to Ignite a Feeding Frenzy.
Plug & Play
6 New Sounds
Water Proof Construction
LRT & VRT Technology
Easy to Install