welcome ! The product is not just a pen, but an FM radio as well! First of all, we appreciated your purchasing of our e-pen, radio pen. It functions as ball-pen and FM radio while driving, walking, fishing, traveling, writing, learning, etc. Therefore, customers can get rid of their old, boring traditional pen (like separated with the radio individually). We not only can memo something anywhere anytime but also enjoy listening music, broadcast, news at the same time. Our product comes with a ball-pen, an earphone equipped with volume control, an Fm radio function composed CPU (auto frequency control)inside. Construction 1、auto scan mini FM radio 2、decent and exquisite appearance , metallic ball pen shell ,Various colors 3、Shape as a ballpoint pen, can write when enjoying music 4、the body of ball pen has a biggish advertisement area, is Ideal for the promotion gifts 5、with earphone (in line volume adjust dial) , High quality sound system 6、Matched 2 cell batteries（AG13） 7、packing: plastic gift box f you are interested in the our products ，please feel free to contact me immediately , or kindly visit my firm web site for further information and more products. my MSN: attn:Xuejiang Deng Mr., 86-13267181927