A:Answer The device can withstand getting wet from rain or being splashed by pool water but is only water-resistant, not waterproof. Look elsewhere for a speaker that can be placed in the shower I know they make them. Maybe something like this...
Bose SoundLink Micro Waterproof Bluetooth Speaker (Midnight Blue) with AmazonBasics Case (Black).
This particular post was posted by Brian Doros on March 16, 2019, on Amazon. Along with this post, the instructions that came with the speaker, in as far as cleaning is concerned tells you "Do not allow liquids to spill into any openings".
Hope this helps.