For those who ride in small groups, the SF4 is equipped with 4-way intercom over 1.2 kilometers (0.8 miles). This model lets riders enjoy smartphone connectivity. Riders can listen to music and use the intercom simultaneously using the Audio Overlay™ feature. Please note that Audio Overlay works best with Android devices, while iOS offers limited functionality.

• Bluetooth 4.1
• Up to 4 way Intercom that extends up to 1.2km (.8 mile) (SF2 and SF4 Models ONLY)
• FM Radio, Radio sharing, audio overlay (SF2 and SF4 Models ONLY)
• Voice prompt
• Sena App for Smartphone