Meet Universe2go: an educational headset that combines with your smartphone to help you learn more about stars, planets, and constellations. The app covers all 88 constellations in the sky. It gives you a close-up view of planets, galaxies, and star clusters. 3+ hours of audio explanations are also available.
Universe2go is pretty easy to use. Start the app, insert your phone, and you are set. Just move your head to learn about new stars. The above video shows how this kit works.