Panasonic SC-ALL05EB-K Wireless Speaker System - Multi-Room - Waterproof

The ALL05 features IPX7/ IPX5 waterproofing for use even in places subject to water splashes, such as the kitchen and the bathroom. It can also be operated with wet hands, and washed off with tap water.
The ALL05 is a Multi-Room Speaker with built-in battery. Its compact body allows easy carrying, for listening to on-line music, NAS, and other sources via Wi-Fi in the bathroom, in the garden, or anywhere in the house.
By setting your favourite radio stations onto the Preset buttons in advance, you get one-touch playback without having to use a smartphone.
Despite its compact size, the ALL05 delivers a big sound. Unique Panasonic digital amplifier technology delivers crisp treble and deep bass notes.
Room-filling stereo sound can be produced by combining two ALL05 devices.