With this speaker, the shower takes even longer ... thanks to the built-in control functions (Power / Pairing, Volume, Skip, Pause). The pairing is carried out without problems, also over a greater distance than the recommended 1 meter. The sound is adequate, the size is ok. The suction cup holds well (smooth glass wall), so you can operate the device with one hand. I invite it to regularly, so I can not say how long the battery lasts in fact, but during a shower process he is not guaranteed empty ;-)