Sena SF4 Bluetooth Headset Dual

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Rider to Passenger or Small Group Communication For riders looking to communicate with their passenger, the SF2 provides simple Rider to Passenger 2-way intercom communication up t o 800 m (880 yards) in open terrain. For those who ride in small groups, the SF4 is equipped with 4-way intercom over 1.2 kilometers (0.8 miles). Both models let 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. Features 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 Show more