Seeed-Studio-Re Speaker-4-Mic-Array-for-Raspberry-Pi-Voice-Assistant-Seeed-Studio-103030216-The-b-Re Speaker-4-Mic-Array-b-is-a-Raspberry-Pi-expansion-board-that-features-quad-analog-microphones-&-is-designed-for-AI-&-voice-applications-With-this-board-you-can-design-&-build-more-powerful-&-flexible-voice-&-audio-projects-that-integrate-Amazon-Alexa-Voice-Service-Google-Assistant-etc-br-br-Differing-from-the-Re Speaker-2-Mics-Pi-HAT-a-href-Catalogue-Product-75-0544-