| Level of Support | Highest |
| Preloaded Bootloader | Maple Bootloader |
| Recommended Bootloader | STM32duino Bootloader |
| Microcontroller | STM32F103CBT6 |
| Flash | 128 KB |
| RAM | 20 KB |
| Clock Speed | 72 MHz |
| USB | Mini |
| User LEDs | PB1 |
| User Buttons | PB8 |
| Real Time Clock | No Crystal |
| Digital I/O | 34 |
| PWM | 12 (16 Bit) |
| Analog Inputs | 9 (12 Bit) |
| Analog Outputs | 0 |
| Dimensions | 51.3 mm x 18.3 mm |
| Price | 4 USD |
