Features:1. STM32F103X minimum system board with OLED interface and user buttons.2. Small system adopts high precision imported high precision crystal.3. Provide schematics and related materials PDF.4. Chip model is STM32F103RCT6.5. 100% and .Specification:Condition: 100% Chip model: STM32F103RCT6Material: PlasticProduct Usage: System boardPackage list:1 * System Board