| Microcontroller | ATSAMD21G18, 32-Bit ARM Cortex M0+ |
| Operating Voltage | 3.3V |
| Digital I/O Pins | 20 |
| PWM Pins | All but pins 2 and 7 |
| UART | 2 (Native and Programming) |
| Analog Input Pins | 6, 12-bit ADC channels |
| Analog Output Pins | 1, 10-bit DAC |
| External Interrupts | All pins except pin 4 |
| DC Current per I/O Pin | 7 mA |
| Flash Memory | 256 KB |
| SRAM | 32 KB |
| EEPROM | None. See documentation |
| LED_BUILTIN | 13 |
| Clock Speed | 48 MHz |
| Length | 68 mm |
| Width | 53 mm |
| Weight | 12 gr. |