Equipped with ESP32-S3R8 high-performance Xtensa 32-bit LX7 dual-core processor, with a main frequency of up to 240MHz. Supports 2.4 GHz Wi-Fi (802.11 b/g) and Bluetooth 5 (LE), with onboard antenna. Built-in 512 KB and 384 KB ROM, stacked 8 MB PSRAM and external 16 MB Flash. Uses Type-C interface to improve user convenience and device compatibility. Onboard 1.8-inch capacitive touch HD AMOLED screen, 368 x 448 resolution, 16.7 M colors, can clearly display color pictures. Built-in SH8601 driver chip and FT3168 capacitive touch chip, using QSPI and I2C interface communication respectively, without occupying too many interface pin resources. Onboard QMI8658 six- inertial measurement unit (3- acceleration, 3- gyroscope), which can detect motion posture, step counting and other functions. Onboard PCF85063 RTC chip, connected to the battery through AXP2101, to achieve uninterrupted power supply, and reserve a backup battery pad to that the RTC function continues to work when the main battery is replaced. Onboard PWR and BOOT two customizable side buttons are convenient for custom function development using buttons. Onboard 3.7V MX1.25 lithium battery charging and discharging interface. 7 GPIO, 1 I2C, 1 UART and 1 USB pads are led out for external devices and debugging, and peripheral functions can be flexibly configured. Onboard Micro-SD card slot provides extended storage, fast data transmission and flexibility, suitable for data recording and media playback, and simplifies circuit design. The benefits of using AXP2101 include efficient power management, support for multiple output voltages, charging and battery management functions, and optimization of battery life. Note:Due to different production batches, there are differences in printing/appearance, which does not affect use. Colour:Black Material:ABS Package Contents: 1 * 1.8-inch AMOLED Touch Display Development Board(without lithium battery version) 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.