YOUTUBE
Both the sides and back are interactive e-ink screens. Let them change color according to what time it is or why not let your phone match your mood and style? Use the sides to scroll, control the volume or skip to the next track. Use the rear side as a keyboard, clock, or why not place your favorite apps here. You decide how your product will work. Piezoelectric feedback lets the product communicate with you using tactile signals in four directions.