Gender: Mens/Unisex Helmet Category: Street Helmet Type: Full-face Helmets Color: Matte Black Size: Large Market Color: Matte Black Primary Color: Black SENA IMPULSE MODULAR HELMET with SOUND BY Harman Kardon. The all-new Impulse is a modular fits Smart? helmet featuring Senas industry-leading Mesh. Intercom and made with Bluetooth? technology Intercom technology plus premium speakers and microphone by the audio professionals at Harman Kardon. The Impulses expertly calibrated speakers bring a level of precision and clarity to in-helmet audio plus an all-new microphone for unprecedented outbound audio quality. The helmet boasts an integrated rear-facing tail light for rider visibility as well as a convenient retractable sun visor. Impulse was built with a DOT-rated composite fiberglass shell and has an intermediate oval fitment. Four strategically placed vents a chin vent top vent and two exhaust vents allow for airflow while riding. Impulse offers:. Meets or exceeds DOT & ECE. Standards. Modular Helme