Hyperparathyroidism is where the parathyroid glands produce too much PTH. This causes blood calcium levels to rise (hypercalcaemia) and blood phosphorus levels to fall (hypophosphataemia).
Just two words: Quality and BlueTooth cannot be used in same sentence. The Sonos Play 3 is a very good sounding speaker for it's price range and is well made. You can't really compare it to a BT speaker as it really is much more. Your smartphone is mostly used as a remote for it rather than a source so your phone doesn't have to be on all the time you use it.
The Kindle Fire HD 6 Kids Edition comes with Bluetooth built-in. This is set up to work with external devices, such as A2DP (Advanced Audio Distribution Profile, a way of streaming audio) compatible stereo headphones, microphones and speakers and LE (Low Energy) accessories. This means that the HD 6 Kids Edition will communicate with other Bluetooth devices. The Bestselling Kids Tablets of 2015.