ALBRECHT Speakers for motorcycle helmet
If you only want to listen to music from your smartphone, MP3 or other device with a headphone output, there is no need to invest in a fully equipped intercom system.
A set of speakers in your helmet is sufficient, a cheap solution and has no need for recharging. You install them in your helmet, simply plug in the cable and off you go.
Helmet speakers are basically mobile ear plugs built into your helmet.