Update: This deal is back, but only for the black version of the speaker this time! Be sure to act quickly if you are interested.
Right now, Vtin is offering its waterproof Bluetooth speaker for just $11 with coupon code 2WKKIATD at Amazon, a savings of $9. Whether you are looking for a speaker to take on the boat, near the pool or even in the shower, this is worth considering. It's powerful 5W driver will offer high-quality audio, and with its 800mAh battery you should get around 8 hours of playback per charge.
This time around the discount is only for the black model, so if you are interested in the blue or orange you'll need to pay full price.
You will need to use the coupon code 2WKKIATD for the full savings here.