1. Rotatable Letter Cube Topper: ABCD letter cube design, rotatable for stress relief, fun interactive stationery. 2. Upgraded Fine Writing Tip: Steady ink flow, smooth writing with no skipping. 3. Waterproof Pigment Ink: Anti-smudge and no bleed-through, clear handwriting great for exams & scanning. 4. Click Retractable Structure: One-press operation, cap-free, lightweight and portable. 5. Morandi style pen barrel: Soft Morandi color, comfortable to hold, light in hand, suitable for daily writing