KOKKIA H10 (Black Cables) : Sports/Motorcycle Helmet Earphones (Stereo) for Helmet Users. Attach to Music/Audio Devices with 3.5mm Audio Jack.

Motorcycle/ski/snowboard/sky-diving/extreme-sports helmet earphones. Created to provide quality sound and music, while you bike and/or enjoy your sporting activity.

Specifications:
50mm diameter speakers velcro, attach easily and securely to inside of helmets
120db
3.5mm gold plug/jack, compatible with 3.5mm audio devices
Frequency response: 20 ~ 20KHz
4 ft cable length (BLACK color cable)

Does not include helmet, audio player/phone, bluetooth receiver device