Features: Brand new and high quality ESP32C3 is a 32-bit RISC-V, includingFPU(floating point unit), which can perform 32-bit single-precisions operation and has strong computing power. It has excellent performances and supports IEE802.11bgn WiFi and BT5 protocols. The boards comes with an external antenna to enhancer the signal strength of wireless applications. It also has a small and exquisite shape combined with a single-sided surfaces mount design. Equipped with rich interfaces, there are 11 digital I/O that can be used as PWM pins and 4 analogs I/O that can be used as ADCpins. It supports four interfaces: UART, I2C andSPI. There is also a small resets button and a boot loader modes button on the boards. ESP32C3SuperMini is positioned as a low-power and cost-effective mini development board for Internet of Things, which is suitable for low-power applications and wireless wearable applications. Specifications: Material:PCB Size:Approx.24.9x18mm/0.98x0.7inch Package Includes: 1x Development Board note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.