www.lilygo.ccSpecifications MCU ESP32-S3R8 Dual-core Xtensa LX7 CPU Wireless Connectivity Wi-Fi 802.11, BLE 5+ BT mesh Programming Platform Arduino-ide、 VS Code Onboard Function Microphone + MAX98357A + Speaker PSRAM 8MB Flash 16MB Size Pin Diagram More Details
This could be a phone accessory, if they ditch the LCD screen and use Type-C male connector for power and data.