2019 R-1 version $99 each
Closing this item out, limited supply

Take calls, hear GPS directions, listen to music, and hear fitness app cues and feedback to easily monitor stats such as speed, cadence, and heart rate. The R1 is equipped with integrated Bluetooth intercom allowing you to connect with three other riders over a half mile distance. Sena’s patented Advanced Noise Control™ filters out wind and white noise so that your riding partners only hear your voice in HD quality. Very good for hearing impaired riders. Safer, easier way to communicate on a tandem between Captain and Stoker. Up to 4 helmets can be connected together.
NOTE: 2 helmets needed to make a system between riders

9 Speed
(will not work on 6600)
Complete $125
Wireless 10 Speed
Complete $175