The IMSA Schuberth Dual Sound 3.5mm Ear Buds & Boom Mic- IMSA connector features noise-canceling earbuds and a microphone. With integrated speaker kits, you can improve your communication with high-quality audio while maintaining comfort. These kits have built-in helmet speakers within the noise-reduction earcups and a boom-style noise-canceling microphone. The dual electronic kits also come with an earbud connector for use with earcup speakers.