Dual Microphone Array for Far-Field Voice Capture: The 2 high performance digital microphones capture and extract far-field speech and voice (up to 3 meters) even in noisy environments as it cancels point noise using two microphone input. Onboard Al ASR Algorithms: Powered by XMOS XU-316 Al sound and audio chip, the kit includes Automatic Speech Recognition algorithms for Interference Cancellation (IC), Acoustic Cancellation, Noise Suppression, Voice-to-Noise Ratio (), and Automatic Gain Control (AGC), enabling high quality voice capture. Open Source Compatibility: Compatible with for , for PlatformIO, for MicroPython, and for CircuitPython, offering a flexible development environment. Digital Microphones:High-Performance Digital Microphones * 2 Sensitivity:-26 dBFS Acoustic Overload Point:120 SNR:64 Far-Field Voice Capture:Up to 3 meter Audio Output:Speaker Connector / 3.5mm Headphone Jack Power Supply:USB 5V, External 5V The product appearance and printed words depending on the batch, but this does not affect use. Colour:As Shown Material:PCB Package Contents: 1 * ReSpeaker Lite AI Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.