Bought this speaker a week ago, but just got an email from the seller advertising various promo codes that they are currently running on their Amazon product pages, lots of codes though only have experience of this speaker.
Code gives 20% off - AK474YB4 (Unsure when it ends)
Useless to me now but hopefully someone will make use of it..
The speaker is pretty decent for the price, it's splash proof and has survived in my shower room so far and gives much more bass than speakers like Anker's Soundcore. Generally a cooler design too.
One of the reasons I got this speaker is the MicroSD slot, especially when using in the shower room, allows me to just jump in the shower, turn it on and press play without needing to connect my phone etc before jumping in the shower. Pretty rare for speakers to have a MicroSD card so was a great find for my personal use, probably useless for most but definitely an extra option.
Hope this helps anyone