According to the box:
"SPACEWARP Desktop is a desktop interior toy that is enjoyable to watch. The compact size allows you to place it anywhere to make it part of your life. When turned on, metal balls roll smoothly along clear rails, sometimes slowly, sometimes quickly, to stimulate your creative senses. When in night mode beautiful glowing balls seem to float in the darkness and refresh you as you watch their dancing lights. Be sure to enjoy this new SPACEWARP with its different expressions for day and night!"
Recommended for ages 15 and up, it measures about 508mm wide, 232mm high, and 150mm deep when assembled. Just put the tracks together and supply three AA batteries for the elevator, and you'll be ready to roll! A neat project, and certainly satisfying (and relaxing to watch!) when complete. Instructions are in Japanese only, but are very clearly illustrated. Enjoy!