It seems the prototype of the extremely thin speaker with flat surface has been adopted to a gadget. Bluedot BSP-S20K flat speaker is the new flat speaker from GeekStuff4U (generally a Japanese product), measures in 125mm x 155mm x 19mm only. Although I’m not sure if they are using the same technology or not, but speaker has start to look thin now!
Bluedot BSP-S20K flat speaker comes with 2 channels of 2-Watts output, so it can only punch out a so-so sound quality from it. But I think it’s sufficient for those who love thin and flat gadget.