Features: Powerful ESP32-C3 SoC, 32bit RISC-V professor up to 160mhz UFLantenna provided, supports WiFi/Bluetoothconnection over 100m Low power consumptionas, support 44 A lowest(deep sleepmode), with 4 working modes available. Supports battery charging, great for various wearable scenarios and wireless IoTapplications BluetoothLE subsystem: support features of bluetooth5 and bluetoothMesh Specifications: Item: ESP32C3 Thumb WIFI Development Board Size:approx 22 x18mm/0.87x0.71in Note: Please allow 0-1cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1PC ESP32C3 Thumb WIFI Development Board