Touch Pen: The pen cap incorporates a touch pen compatible with smartphones, tablets, and computers. Its primary purpose is to replace or supplement finger gestures, enabling more precise and convenient mobile device operation through interaction with touchscreens (primarily capacitive, occasionally electromagnetic).

USB Drive: Features an integrated USB drive chip for data storage, functioning as a portable flash drive.

Laser Pointer: Emits a visible laser beam for precise pointing, widely used in presentations, teaching, and observation scenarios. Higher-power models may offer specialized functional applications.