1. Support Raspberry Pi Zero, Raspberry Pi 1 B +, Raspberry Pi 2 B , Raspberry Pi 3 B/3B+ , Raspberry Pi 4B 2. Dual-Microphones 3. 2 Grove Interfaces: support GPIO and I2C 4. Programmable Button and LED: one button and three LEDs 5. Audio codec onboard Far field support (up to 3 meters) colour:green material:plastic size:65x30mm Package Contents: 1 x ReSpeaker expansion board Only the above package content, other products are not included. Note: Light shooting 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin