You will be surprised the first time you listen to WOOFit S! Does all that sound come from such a small speaker? Yes, we have upgraded the WOOFit speaker to an even more powerful WOOFit S version! The upgraded WOOFit S model has the same sleek design as the bestseller WOOFit – Sackit have just added even more powerful sound to the speaker. WOOFit S does not have radio function and the carrying case is not included.