Sena SMH10-11 Bluetooth 3.0 Headset-Intercom System

Install this system in your ear muffs for clear, long-range communication up to 900 meters (980 yards) away! Using Bluetooth® 3.0 connectivity, you can make hands-free calls on your smartphone with speed dialing; listen to and share music; and participate in a four-way intercom conversation. Additional features include a Jog Dial for simple operation; Advanced Noise Control™ that limits background noise for incoming and outgoing audio; individual volume control for each audio source; and an integrated audio booster. The water-resistant system easily attaches to most helmets and provides up to 12 hours of talk time and 10 days of stand-by time on a single charge.