You can spend a lot of money on a Bluetooth speaker if you want, or you can just wait for a sweet deal like this. The Aukey MUSE (SK-M2) Bluetooth speaker is available on Amazon for just $20 with a coupon code. That's down from $35.99 without the code.

2015-05-19 Checkout

You know the drill—just add the speaker to your cart and use code 95RYLKUL to get the discount instantly. The Aukey MUSE has dual 5 watt drivers and is apparently capable of 10 hours of battery life. The Amazon reviews are good too with an average of 4.1 stars.

The promotion is valid for a limited time, but Amazon isn't saying just how limited. Best to take advantage of it now if you're interested. The speaker does have Prime shipping as well.