On-board Micro-SD card slot and camera interface, built-in ST7789T3 display driver chip, SPI interface communications Supports 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth5(LE) with on-board antenna Built-in 512KB SRAM and 384KB ROM, 8MB PSRAM and external 16MB Flash. On-board 2-inch high-definition LCD screen, 240x320 resolution, 262K color, can clearly display color pictures. On-board 3.7V MX1.25 Li-ion battery charge/discharge interface LCD Screen Parameters Display Panel:IPS LCD Display Resolution:240x 320 Display Interface:4-wire SPl Display Size:2inch Display Color: 262K Driver: ICST7789T3 Colour: As Shown Material:PCB+LCD Specification:A Without camera / B With camera Due to different batches, there may be differences in product appearance and printed text, which will not affect use Package Contents: 1 * LCD Display Board 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.