SMALL GROUPS CONNECTIVITY & COMMUNICATION, The SF4 is the perfect device for riding with friends by providing connectivity for small groups. The SF4's
SF4 Helmet Intercom - Bluetooth
Sena SFR Bluetooth Headset & Intercom - Urban Rider
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SF4 Helmet Intercom - Bluetooth – Sena UK
Sena SF4 intercom review
Review: Sena SF4 Intercom system
Dual Bluetooth headsets with a sleek and low profile design
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Sena SF4-02 user manual (English - 51 pages)
The SFR Bluetooth communication system has 4-way intercom functionality, providing connectivity perfect for small groups of riders. The SFR's intercom has a range over 1.2 kilometers (.8 miles) so you can stay easily connected with your friends in open terrain. Plus, the slim SFR connects to a smartphone, MP3 Player or GPS so that you can easily listen to music, hear turn-by-turn GPS directions and make phone calls.
Sena SFR Bluetooth Headset
The SFR Bluetooth communication system has 4-way intercom functionality, providing connectivity perfect for small groups of riders. The SFR's intercom has a range over 1.2 kilometers (.8 miles) so you can stay easily connected with your friends in open terrain. Plus, the slim SFR connects to a smartphone, MP3 Player or GPS so that you can easily listen to music, hear turn-by-turn GPS directions and make phone calls.
Sena SFR Bluetooth Headset