The Livescribe Aegir Smartpen Black Dolphin Professional Edition is a digital pen/stylus that offers wireless connectivity options such as Bluetooth and USB. This unit comes with a lined journal and is designed for professional use. The sleek black design and advanced technology make it a versatile tool for those in need of a high-quality digital pen for their work or studies. With one unit included, this smartpen is perfect for those looking for a reliable and efficient tool for their creative projects or professional tasks.