Our best idea was the purchase of 2 SENA Bluetooth helmets for a captain and stoker. They work like a charm, no yelling to each other. We can talk while we ride in normal voices or listen to music. Everything is internal. Charging is a simple plugin, no microphone bar, and no ear sets. Everything is located in the helmet. We can also pair with 4 helmets total when we ride with another tandem couple.