The Cardo Spirit Headset is an ideal choice for riders looking for a no-frills, solo or 2-up Bluetooth communication device. With two channels for connecting… • Intercom communication between passenger and rider (Range: 0.25 miles/ 400m). • 2 Bluetooth channels to connect with phone/GPS devices. • Phone features include make/receive/reject calls, speed dial, conference call with intercom, receive in-helmet navigation instructions from compati…. • Automatic Volume Control can automatically adjust