Uses ESP32-C5-WROOM-1 series module, equipped with RISC-V 32-bit processor, with a main frequency of up to 240MHz Integrated 2.4GHz and 5GHz dual-band Wi-Fi, Bluetooth 5 (LE), and IEEE 802.15.4 (supports Zigbee 3.0 and Thread) wireless communications for excellent RF performance Onboard battery charging management module, reserved 3.7V MX1.25 lithium battery interface, can be powered by external battery Reversible USB Type-C port Leading out a variety of peripheral interfaces, stamp hole design, convenient for welding and integration into the baseboard designed by the user it can stably handle concurrent multi-protocol stack tasks and moderate-load applications. Developers can leverage mature development frameworks such as ESP-IDF or for Arduino for rapid prototyping and product implementation. It is suitable for practical IoT scenarios such as smart gateways and multi-protocol device access. (The product printed words may vary depending on the batch, but this does not affect use) Specification:B: No soldering pin header / A: Soldering pin header Color: As Shown Material: PCB Package Contents: 1 x ESP32-C5 Development 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.