While the product name is of the above, I think it is more of a nixie digital clock - perhaps something got lost in the translation somewhere? Anyways, the entire row of red LEDs are embedded within each “test tube”, all hooked up to a wooden stand to make this an interesting conversation starter. Not only are the hours and minutes displayed - even the seconds are also up for all and sundry to see. The Test Tube Digital Clock retails for $75 (including shipping) - pretty pricey if you ask me, but it isn’t something you can just buy off the shelf either.