Velcro Mount Helmet Speakers kit mono 

item number: HS-mono

Have a Helmet with a 3.5 Ear jack only wiring
and want a simple way to add speakers?
Just plug this into your existing wiring and install speakers!

Velcro mount speakers with 3.5mm mono plug Perfect for
motocross, street, and other helmet applications.

Universal 3.5mm jack works with all iPhones, iPods, and most MP3 players.

Features:
Clear Hear and loud volume Audio Speakers
3.5mm plug 

Velcro Mount Helmet Speakers kit mono