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Its on flash sale. 

Why you need a speaker when showering?

Anyways don't expect good sound quality from that price range

Search for tronsmart speakers. Review can ask Keatsan

Tronsmart Bluetooth Speaker I bought from Shopee cost less than RM100.

It had all functions such as micro SD, Bluetooth pairing and even Aux jack. Bonus would be water-resistant ipx56, for outdoor activities.

The bass is clear and powerful since it has two 3.5w speakers. I use it for music / movie and even conference call through my mobile phone.

It can be paired with another same unit and create a better stereo sounds.

The speaker I'm saying is the Tronsmart Element T2.

The video review is in Russian but skip to 4:15 onwards for the distance pairing limit and the audio quality.