I was thinking about buying these new wireless earbuds called DASH. They are made by a kickstarter company Bragi. They recently told us that in order to connect both earbuds together and also connect it to a device using bluetooth they needed to use magnetic induction. I was wondering what that was and how it is able to boost a Bluetooth signal and if it was harmful or not. It seems interesting because they claim it makes Bluetooth signal much stronger, so you can even use them underwater. Where as I thought the Bluetooth signal couldn't pass though water. Anyway If you knew any information on this I would really appreciate it. Below is the discription Bragi gives us about magnetic induction: Plan C uses magnetic induction rather than radio waves for communication between right and left Dash. The Dash is still capable of connecting to a smart phone or computer via Bluetooth. Each headphone creates a magnetic bubble of approximately 25cm. It is immune from wireless interference and virtually secure from eavesdropping. It is absolutely safe from a health perspective and much better than using bluetooth between the ears (we live in a huge magnetic field created by our dear earth). The link is incredibly stable and works in virtually any condition except within very strong magnetic fields (that are very rare). The Dash will provide stable stereo playback even if the user has long and wet hair, is wearing a helmet for skiing or biking and in other challenging conditions. It will even work while swimming (down to 1m depth due to water proofing). We think that is AWESOME! The energy consumption has been reduced as well, so expect an increase in battery life of 30-40%. That results in improvement from 3 hours promised to 4 hours or more pending on sensor activity.