The presence of a touchscreen and the absence of buttons distinguishes them from the next LED clock, so the control is completely touch-sensitive. Dual Touch - because the diodes can glow in two colors (depends on the model; different combinations of red, green, blue and orange are available). There is a mode in which the diodes are chasing a finger, and even the clock can show the animation of a running man :) It's a pity that they are sold only in Japan, and they are expensive - it turns out about 6350 rubles