For speakers themselves:
The palm-sized device comes in bright orange and blue. It is completely covered with a rubber layer and has a large suction cup, with which you can attach it to smooth surfaces (tile, mirror, glass, bath cabinet, etc.). It is advisable to clean the surface thoroughly beforehand, so that the suction cup holds well is. We have the power now since about 3 weeks in use. It has not yet fallen off the wall, although it was also appropriate from time to time elsewhere. The suction cup holds amazingly safe!
Attached is a brief guide that will help you can operate the unit quickly. Previously, it has of course the supplied USB cable (power supply is not available) to be charged. It takes about 1.5 hours. Then you can listen to a few hours radio or music. The duration of the battery power is of course dependent on the volume at which you use the device.
Radio reception is mediocre. Strong transmitter receives the device well, weaker are audible in part only with noise.
The tuning work on the forward and rewind keys. Set a frequency directly is not possible, the search process one uses without frequency information.
The Bluetooth connection but works flawlessly. All devices that we have the Knubbel previously connected, recognizes the device without any problems and the connection remains stable.
So far I have not used the device directly into the shower, but it fitted in the bathroom on the tiles. Whether it actually endures a lot of water in the shower, I do not dare try to, but does not mind splashing.
MY CONCLUSION:
Functional, well-adhering speaker for the bathroom, camping, pool, boat, or other applications where a speaker may be exposed to moisture. The sound is okay, no Highlihgt and sound lovers will have no great pleasure. To listen to messages, the favorite song or audiobook absolutely okay and to my mind quite sufficient.
That you have to do something in the usability compromises, I think logically in a waterproof device.