The LX-G16 is compliant with Bluetooth Specification V5.0 supporting the following profiles: Headset Profile (HSP), Hands-Free Profile (HFP), and Advanced Audio Distribution Profile (A2DP). It supports universal pairing with almost all Bluetooth headsets on the market. Speakers: HD 40MM stereo helmet speakers and headset(s) included. These are designed for installation into most open face, modular, and full-face style helmets. Superior audio fidelity has been achieved with our high quality, non-ported, and ultra-slim helmet HD speakers. This headset also provides the industry's best combination of wind and ambient noise reduction with the included microphone(s), we use CVC and built-in DSP noise reduction. Battery: The LX-G16 features an 850 mAh battery which can provide the intercom devive with 15 hours of music or 15 hours of intercom talk with over one week of standby time.