Motorcycle Helmet Bluetooth Headset and Intercom with Noise-Cancellation & Handsfree Calling (2-Pack) for Samsung Galaxy S4 , S3 , Note 2 / Motorola DROID RAZR MAXX HD , RAZR M / HTC DROID DNA , One , First & More - Includes Headset Cleaning Kit Bluetooth V2.1 with DSP echo, wind, and noise cancellation technology for ultra-clear handsfree calling Compatible with Bluetooth-enabled Smartphones, tablets, MP3 players, and additional headset/intercom units Equipped with A2DP functionality for wireless audio streaming from your phone, MP3 player, or other Bluetooth-enabled device Intercom functionality allows for bike-to-bike communication at distances of up to 150 meters Easy-to-reach on-helmet controls allow you to pick up calls, adjust the volume, and communicate with other intercom units with ease