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, compatible with Arduino IDE. Advanced Power Management: Includes a 3.7V lithium battery interface with a software-controlled power switch. Standby current consumption is minimized when inactive. Versatile Compatibility: Designed as a compact alternative to the Pro Micro, it maintains the same pin layout and is compatible with standard Pro Micro-based keyboard builds. Innovative Design: Features a Type-C USB interface and built-in bootloader for easy programming and connectivity. Comprehensive Kit: Includes five development boards. Compact size and robust specifications support diverse applications. Color: As shown Material: Plastic Package Contents: 5 × Development Boards Note: Actual color may vary slightly due to screen settings and lighting conditions. Dimensions may vary by ±1–3 cm.