ES8388 Chip: Low- stereo codec, composed of dual-channel , dual-channel DAC, microphone amplifier, headphone amplifier, digital audio processor, analog mixing and gain control functions.Audio output Socket: a 3.5mm headphone , two JST-PH 2.0mm (Left/Right) speaker jacks (recommended 4 ohm 3 watt speakers).ESP32-WROVER module: Contains ESP32 chip, integrates SPI flash and PSRAM, can Wi-Fi/Bluetooth connection and digital processing capabilities, and realize flexible data storage.Application: Suitable for Wi-Fi speakers, Bluetooth speakers, voice remote controls, and all applications require audio functions.This product comes with ESP-ADF firmware, users can use the ADF on Github to test and modify it to their own firmware.ESP32- is an audio development board specially developed for interaction market, using the ESP32-WROVER module. The module is highly integrated and includes 4.5 MB of RAM. ESP32- is based on ESP32 dual-core processor and has Wi-Fi+BT function. It can realize a highly integrated audio solution with only a few peripheral devices, and quickly develop intelligent audio, intelligent story machine, intelligent Home and other products, greatly shortening the product development cycleButton: Touch + button supply mode: USB supply or external supplyFunction descriptionSupport multiple audio input: Wi-Fi, Bluetooth audio, AirPlay, DLNA, -in, etc.Dual microphone pickup, can develop near-field and -field speech recognitionSupports various mainstream lossless audio formats: ALAC, AAC, FLAC, , MP3, WAV, OGG, etc.Complete Wireless Standards - Wi-Fi 802.11b/g, Classic BT, Support multiple distribution networks: distribution network, Airkiss distribution network, etc.Rich peripheral interfaces: wired network port, touch button, TFT screen, Camera interface, etc., with strong expansibility, convenient for product differentiationSupports multiple cloud platforms: for DuerOS, Himalaya, Turing Robot, DeepBrain, etc.Colour: blackMaterial: abs+metalSize: 95.5 x 80.6mmPackage Contents:1 x Development BoardOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.