Optimized Performance: Equipped with a 5V/16MHz Pro Micro microcontroller and an NRF52840 chip, this development board ensures efficient operation. It features 1MB of flash memory and 256KB of RAM. Advanced Power Management: This board includes a 3.7V lithium battery interface with a software-controlled power switch to conserve energy. Standby current consumption is minimized when inactive. Versatile Compatibility: Designed as an alternative to the Pro Micro, this development board is compatible with Nice! for Nano. It maintains the same pin layout as the Pro Micro for integration with Pro Micro-based keyboard setups. Innovative Design: The board features a Type-C interface and built-in USB programming capability. Comprehensive Kit: Each package includes five development boards. The boards have a compact form factor and are suitable for various applications. Color: As Shown. Material: Plastic. Package Contents: 5 × Development Board. Note: Light reflection and display differences may cause slight color variation between the image and the actual item. Measurement tolerance: ±1–3 cm.