features: ESP32-S3FN8 + SX1262 Chipset, device can be driven via Wi-Fi, BLE and LoRa;Default 212 x 104 pixels black-white display, it can also be used to drive E-Ink screens of other sizes;High contrast, high reflectance, ultra-wide viewing angle;Low power consumption, 20uA in deep sleep;Internal integrated display screen refresh page function, users can drag and drop BMP images to achieve refresh;Commercial temperature range: -25 ~ 40Onboard USB-UART bridge, facilitate user secondary development.model: A-863-870Material: plastic+metalcolour: As ShownPackage Contents: 1 x Lora Wireless development boardOnly 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.