ReSpeaker 2-Mic Pi HAT V1.0 for Raspberry Pi 4/4B, Raspberry Pi 3 3B /2B This ReSpeaker 2-Mic Pi HAT shield is compatible with raspberry pi 4/4B/Pi3/3B/2B, designed for AI and voice applications. It is a low power stereo Codec based on the WM8960 There are two microphones on the shield for sound collection, three APA102 RGB LEDs, one user button and two Grove connectors for application extension Comes with a 3.5mm audio jack or XH2.54-2PIN speaker output can be used for audio output You can use it to build more powerful and flexible voice products and integrate various voice services Package includes: 1 x ReSpeaker 2-Mic Pi HAT Shield