How to use: You can use the notebook to write down your ideas, to - do lists, or anything you want to remember. The pen is ready for immediate use, and the USB flash drive can store your important files. Attention: Avoid exposing the notebook to excessive moisture or direct sunlight, as it may damage the cover and the paper. When using the USB flash drive, make sure to safely eject it to prevent data loss. Maintenance: Keep the notebook in a dry and cool place. Wipe the cover gently with a soft cloth if it gets dirty. For the pen, keep it capped when not in use to prevent the ink from drying out.