Signature pens are similar to gel pens and taller than gel pens. Parker's signature pen needs to buy a special Parker signature pen refill, which is not universal and expensive. It is not easy to buy a replacement refill, and it is thicker than the ordinary 0.5 gel pen refill, so it is not recommended that you buy a signature pen. A pen is an ink pen, which is called a pen in China and an ink pen or fountain pen abroad. If you want to say which one looks good, it must be a pen. Writing a pen is more temperament.