Dark Skys Skyview Pocket Planetarium

It incorporates a 450nm direct blue diode laser, precision glass optics, and holographic technologies to create an out-of-this-world visual experience that can't be matched. Projects over 1.2 million stars, no need for focus. With its rechargeable lithium-ion battery, the sky is the limit. Take it wherever you want to go Learn the constellations... Just by rotating the outer ring, you can change your view from stars only to stars with constellations