Why This Pen Will Accelerate Your Learning Visualize Your Effort to Maintain Motivation Simply attach it to your pen and write. The color of the LED changes according to your study volume, and it links with a smartphone app to track your progress with graphs and records. A Strong Ally for Certification Exams and Reskilling Even studying that you tend to put off becomes fun and continuous with this pen, like a game. It powerfully supports self-study, which is prone to failure. Transform Your Pen into Smart Stationery Just attach it to your favorite pencil or pen. You can introduce the latest technology while maintaining your usual writing feel. Product Condition & Peace of Mind Brand New & Unopened This is a complete, "unopened and unused" product that was purchased through crowdfunding and carefully stored. It's perfect as a reward for yourself or as a gift for someone special. Clean Storage Environment It has been stored in a non-smoking, pet-free environment in a dark place. The packaging is also in very good condition. About Packaging and Shipping The product will be carefully wrapped with cushioning material to prevent crushing, and shipped with waterproof measures.