The Motion 301 is Siemens' newest and most sophisticated behind-the-ear power aid. Designed to be as small and light as possible, the Motion is ergonomically shaped so it sits comfortably behind your ear. And, with the latest Siemens BestSound Technology, Motion automatically focuses on the sounds you want to hear, speech, music, conversations - all without you lifting a finger. Available in your choice of two power levels, S or SX and P, Motion is powerful enough to accommodate a wide range of hearing losses. Motion comes with a traditional earhook which requires you to attach your custom made earmold (NOT included, and available separately at your local hearing care professional) or it can be ordered as an open-fit hearing aid with the available Lifetube attachment (a no-cost option). Your hearing aid professional can help you decide which configuration is best for you. As always, we highly recommend you consult with one first before purchasing this, or any other hearing aid.