Single Bluetooth 4.1 intercom for connection with 4 helmets and 2 devices. FM radio. Slim version.

The SFR Bluetooth communication system has 4-way intercom functionality, providing perfect connectivity for small groups of riders. The SFR intercom has a range of over 1.2 kilometers (8 miles) so you can easily stay connected with your friends in open terrain. Additionally, the SFR Slim version connects to a smartphone, MP3 or GPS so you can easily listen to music, hear GPS turn-by-turn directions and make phone calls. More importantly, riders can listen to music and use the intercom at the same time, using the Audio Overlay™ feature.
There are no clamps or screws required to attach the device to the rider's helmet. Simply use the double-sided hook and loop tape to securely attach the SFR Bluetooth device to the helmet. Plus, with the SFR's quick-charging capabilities, you'll be ready to start your ride in no time. Connect your Sena SFR Bluetooth device to the Sena SF Utility app (available for iPhone and Android) to easily configure device settings and quickly access guides. You can also sync your SFR with the Sena RideConnected app, which allows riders virtually unlimited amounts of battery life, as long as you’re connected to a cellular network.