 | HS-100 |  | Hands-free Sets for Motorbike Helmets with PTT-Button for Two-Way Radios |
 | HS-200  | | Headsets for Motorbike Helmets for Audio Devices such as CD/MP3-Player, GPS-Systems |
 | HS-300 | | Hands-free Sets for Motorbike Helmets for Mobile Phones |
 | HS-400 | | Hands-free Sets for Motorbike Helmets for Two-Way Radio and Mobile Phone |