performance you'll want to hear stable wireless connection to your devices — up to 2x faster when switching the h1 chip also drives voice-enabled siri access and delivers up to 30 percent knows when you're listening knows when you're talking recognizes when you're speaking and works with a pair of beamforming microphones to filter out external noise and focus on the sound of your voice optical sensors and motion accelerometers work together to automatically control the audio microphones for phone calls and play sound as soon as they're in freedom to wear one or skip forward with a double-tap when listening to music
