Equipped with high-performance Xtensa 32-bit LX7 dual-core processor, with a main frequency of up to 240MHz. Supports 2.4GHz Wi-Fi and Bluetooth 5 (LE), onboard internal antenna, reserved solder joints, can be set as external antenna. Built-in 512KB SRAM and 384KB ROM, stacked with 16MB Flash and 8MB PSRAM. Onboard 1.64-inch AMOLED capacitive touch screen, 280x456 resolution, 16.7M colors. AMOLED screen display uses QSPI interface, capacitive touch uses I2C interface. Onboard QM18658 six-axis inertial measurement unit (3-axis acceleration, 3-axis gyroscope) can detect motion posture, step counting, etc. Onboard RST, BOOT side buttons, BOOT supports custom button functions, making development and use more flexible. Onboard 3.7V MX1.25 lithium battery charging and discharging interface. Onboard Micro-SD card slot, can be connected to an external SD card to store pictures or files. Onboard USB Type-C interface, can be used for power supply and download debugging, convenient for development and use. Exposed I2C, UART and USB pins for external devices and debugging, flexible configuration of peripheral functions. The screen adopts CNC processing structure and edge bonding, with delicate and soft texture, and the overall appearance is beautiful and durable. (The product appearance and printed words may vary depending on the batch, but this does not affect use) style:A Color: As Shown Material: PCB+LCD Package Contents: 1 * 1.64-inch Touch Screen 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.