You choose either a gas or diesel engine sound with adjustable horn for your electric car, truck or boat. Idle rate and top speed are also adjustable. Simple 4 wire hook up. Completely assembled. Compact, state of the art design synchronized to motor speed. Perfect for Dumas Chriscrafts, Midwest Trawlers and other medium sized ships.

-2" Speaker (included)
-Runs on 6-14.4V