1. Convenient Design, Elegant Travel: The pen tip adopts a telescopic design, which can be easily operated with one hand, and completely bid farewell to the trouble of losing the pen cap; the transparent pen barrel is both fashionable and professional, and the airtight sealing structure effectively prevents the ink from drying up and leaking. 2. Smooth Writing, OneStop: Equipped with a medium nib and precise ink regulator, this pen delivers bold, consistent lines for signing documents, notetaking, or everyday writing tasks. 3. Environmentally Friendly and Durable, Continuous Output: Equipped with 5 blue ink refills, it supports repeated filling and use, reducing the waste of resources caused by disposable pens, taking into account writing needs and environmental protection concepts, and achieving longterm writing. 4. Comfortable Grip, LongLasting Writing: The ergonomic pen grip area fits the curve of the hand, which can effectively relieve hand fatigue even after longterm writing, bringing users a comfortable and relaxed writing experience.