Nolan N-Com B4 Bluetooth Kit for N104, N44 and N40 Helmets The N-Com B4 is the revolutionary N-Com communication system, specifically designed for the N104, N44 and N40 helmet. The innovative installation system mounts between the helmet shell and EPS liner by simply releasing the shell sealing edge and inserting the N-Com B4 ( see updated installation notes from Nolan here ). Traveling by motorbike is now all the more pleasant with B4 it is possible to communicate with 4 motorbikes up to 500 meters (in open terrain, with no obstacles), listen to the integrated FM radio, and set up the system easily with your PC from home. The B4 can be upgraded to the B4 PLUS via Firmware version 4.02 (download from N-Com Wizard). You will have all of the features of the B4 Plus except the DSP - Digital Signal Processing, General Features Management from PC via micro USB wire (included). N-Com Wizard program downloadable from the Download section. Adjustment of audio parameters, firmware update, FM radio stations pre-setting. FM radio integrated with RDS Search for radio stations, 6 pre-settings Telephone via Bluetooth answering, hanging up, voice commands, redialing the last number (for telephones that allow it), intercom/phone automatic management Automatic exclusion of intercom and of the connected audio source during a telephone conversation. Automatic reconnection at the end of the phone call Conference Call function 3-way telephone call between Pilot, Passenger and caller Pilot/Passenger intercom via Bluetooth BIKE-TO-BIKE intercom via Bluetooth up to 800 meters (in open field, with no obstacles) Intercom 4 bikes one-to-one communication. Bike to Bike Call Function Bluetooth connection to A2DP Mp3 players Play, Pause, Stop, Skip directly from the helmet (AVRCP profile) Connection via Bluetooth to compatible satellite navigators directions, MP3 music, mobile phone (for models that allow it) GPS Conference function Pilot/Passenger intercom active while the GPS is giving instructions Compatible via Bluetooth with all Bluetooth communication systems of the N-Com, X-Series and MULTI lines Upgradable firmware Technical Features Bluetooth profiles Headset, Handsfree, A2DP, AVRCP, Intercom Full duplex intercom High quality audio hi-fi stereo Perfectly integrated in the helmet Noise-dampening microphone 3.5mm Aux. Input for cable connection to multimedia devices Mp3, GPS, PMR/GMRS radio, audio systems of motorcycles (cable not included) Micro USB connection cable for PC management included in the packaging Weight 110 grams Lithium battery, rechargeable and removable Battery low indication with acoustic and visual signal, auto-off function Battery charger 100/240V 50/60 Hz Certificates Bluetooth 2.1 + EDR, class 1 Type-approvals FCC, IC, CE, C-tick Please see special installation notes here.