Sena pi, Universal Bluetooth Intercom Headset, Fits Most Cycling and Multi Sport Helmets

Bluetooth Intercom system that attaches to most cycling and multi-sport helmets by clipping to the helmet's straps Supports up to 2 connected riders within an effective range of 400 meters (0.25 miles) in open terrain Has an effective talk time of 6 hours; unit fully charges in 2.5 hours Pair to your smartphone and gain access to your music library, hear GPS navigation, and take or make phone calls Compatible with the Sena Utility App for added functionality, including Smart Intercom Pairing for quick pairing to other Sena Bluetooth devices via QR code