Description/Features: High-performance MCUs with RISC-V 32-bit dual-core and single-core processors 128 KB ROM, 16 KB LP ROM, 768 KB L2MEM, 32 KB LP , 8 KB TCM Powerful image and voice processing capabilities, image and voice processing interfaces include JPEG codec, pixel processing accelerator (), image signal processor (ISP), H264 video encoder 32MB PSRAM inside the chip package, 32MB Nor Flash outside the package The board leads out MIPI-, MIPI-, USB 2 MIPI-, USB 2.0 OTG , SDIO 3.0 TF card slot, dual microphones (support cancellation), speaker terminals and battery terminals and other common peripheral interfaces Security mechanisms: secure boot, Flash encryption, hardware encryption accelerator and hardware random number generator. It also supports hardware access protection, which can realize access rights management () and permission separation Specifications Due to different batches, there may be differences in product appearance and printed text, which not affect use Color: As Shown Material: LCD Package Contents: 1 x 4inch Round Touch 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.