Seeed Studio XIAO ESP32C3 featuring ESP32C3 carries a complete Wi-Fi system along with Bluetooth Low Energy function. With its exquisite design, WiFi+BT ability, it's perfect for various IoT controlling scenarios and complex variable applications. Powerful ESP32-C3 SoC and U.FL antenna provided that supports Wi-Fi/Bluetooth connection over 100m 21 x 17.5mm overall dimension, portable and lightweight Supports battery charging, great for various wearable scenarios and wireless IoT applications Contents Seeed Studio XIAO ESP32C3 x1, Antenna x1.