Equipped with ESP32-S3 and ESP32 dual MCUs, up to 4 cores and 240MHz main frequency. Supports 2.4GH z Wi-Fi ( 802.11 b/g/n) and Bluetooth 5 (LE) and Classic Bluetooth, with onboard antenna; Built-in 512KB SRAM and 384KB ROM, with onboard 16MB Flash and 8MB PSRAM; Onboard 1.8 inch LCD display, 360 × 360 resolution, 262K color. Supports touch control via I2C interface, with interrupt support; Onboard audio decoder chip, microphone, knob encoder, vibration motor, TF card slot, and battery recharge management module; CNC process metal case with blue / black color options, nice looking and durable, easy to carry