SENNHEISER SIGNATURE SOUND Enjoy rich, dynamic audio powered by premium drivers and support for AAC, aptX, and aptX Low Latency codecsBUILT-IN VOICE ASSISTANT ACCESS Instantly activate Siri, Google Assistant, or Amazon Alexa with the dedicated voice assistant buttonBUILT-IN MICROPHONE FOR CLEAR CALLS Integrated mic ensures seamless hands-free calling and voice commands with crisp clarityBLUETOOTH 5.0 CONNECTIVITY Fast, stable wireless connection with multipoint support for pairing with two devices simultaneouslySENNHEISER SMART CONTROL APP Customize your sound experience with a graphic EQ and firmware updates via the app.