The Espressif ESP32-C5NF4 is a dual-band Wi-Fi 6 and Bluetooth 5 (LE) system-on-chip designed for high-performance, low-power IoT applications. Based on a 32-bit single-core RISC-V processor running up to 240 MHz and a secondary low-power RISC-V core, it integrates 4 MB of on-chip flash and 384 KB SRAM. Supporting 2.4 GHz and 5 GHz Wi-Fi 6, Bluetooth LE, and IEEE 802.15.4 (Zigbee 3.0, Thread 1.3, and Matter), it offers versatile wireless connectivity for smart devices. The ESP32-C5NF4 provides up to 29 GPIOs, advanced security with secure boot and flash encryption, and full software support via the ESP-IDF, making it ideal for connected home, industrial, and wearable designs requiring robust dual-band performance and low energy consumption.