ster

Works well as a coaster - probably shouldn't have bought the white one as everything around it is black. Looks good, lights up shaker cups well. Wish I could have gotten a longer usb cable though.

Works exactly as advertised, no if or ands

It lights up just as advertised. Do wish it had more colors though.

I bought one of the astro lounge cups at PAX East and have been using it heavily since. It eventually developed a slight leak. So rather than buy a whole new cup (when I already have others) I decided to get this coaster and use the cup as a display piece. I was expecting it to barely be visible through the cup and it to be a permanent on/off. But the lights actually shine beautifully through the astro lounge cup and these coasters have a very simple but very clever way of only turning on when the cup is on top.