SMART-TIP Pen Set Black (Bic 4-color Ball Pen) iPhone iPad and other touch screen devices, product by UNUS PRODUCT SERVICE. It gives a stylus function to a multi-color ballpoint pen. When using the stylus function, there is no need to switch to another pen. It has our self-developed pen point Electric-Tip?E-TIP). It is made of aluminum. The surface is coated with high-grade anodized aluminum. This product has not been developed together with other stationary manufacturers.