The Conduit is going to be very light only weighing 42g. The frame is made out of titanium and is very flexible as well which is really cool. It includes a built in noise cancelling microphone and six hour battery life. It is also dust, rain and sweat resistant. It fits perfectly and has a wireless range of up to 30 meters.
These earbuds are really cool and cost around $76. If you want to support them, click here: https://www.kickstarter.com/projects/conduitsports/conduit-sports-dynamic-bone-conducting-headphones?ref=8h1d1x .