The SENA SRL-02 Shoei Neotec II GT Air II and J-Cruise 2 Motorcycle Bluetooth Communication System has been designed jointly by SENA and Shoei for the new Shoei Neotec II*, GT Air II and J-Cruise 2 motorcycle helmetsBluetooth 4.1 enabledAudio multitaskingVoice commandIntercom for 1.6km / 1.0mi radiusEight-way intercom systemMusic sharingLithium Polymer Battery2.5 hour charging timeNoise Cancellation with Advanced Noise ControlFM RadioTalk time of 10 hoursCE, FCC and IC certificationRemote control compatibleCustom Helmet fitThe SENA SRL-02 Shoei GT-Air 2 Motorcycle Bluetooth Communication System allows you to have a conversation with up to 7 others via HD Voice Audio. The other users can be up to 1.6 / 1.0mi away during this time. If members of the group are using a different brand of Intercom, there is no problem with comms as this system is universal. There is also Audio Multitasking included which allows the rider to listen to music and talk to other riders via intercom simultaneousl