Equipped with a high-performance Xtensa 32-bit LX7 dual-core processor, clocked at up to 240MHz. Supports 2.4GHz Wi-Fi and Bluetooth 5 (LE), with an onboard internal antenna. Built-in 512KB and 384KB ROM, with integrated Flash and PSRAM. Equipped with a 1.54-inch e-ink display with a 200x200 resolution, featuring high contrast and a wide viewing angle. Onboard audio codec chip supports voice capture and playback, facilitating AI voice interaction applications. Onboard PCF85063 real-time clock (RTC) and SHTC3 temperature and humidity sensor for precise RTC time management and temperature and humidity monitoring. Onboard Micro-SD card slot for external Micro-SD card storage for images or files. Onboard PWR and BOOT buttons with customizable functions facilitate custom function development. Reserved 2 x 62.54mm pitch female headers for external expansion. Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. (Lithium battery not included, you need to prepare it yourself) Color: As Shown Material: ABS Package Contents: 1 x E-Ink Display 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.