Stripping away all non-essential functionality, these sleek audio accessories are tiny enough to be effectively invisible and entirely wire-free. No need to worry about charging, either – their small carrying case lets you power them back up on the go.

Earin just finished raising £972,594 on Kickstarter, over 5 times its original funding goal, reflecting how much so many of us wish to get rid of those pesky wires when listening to music on the move.

Beyond long battery life, ergonomic comfort, snug sport-friendly casing other essential considerations, stretch goals for the project include waterproofing, phone adapters and battery monitors.

From its creators: “No unnecessary functionality has been added. No sensors, no lights and no microphone, that’s right – no microphone! Not because we couldn’t but because we wouldn’t! We use balanced armature speakers, used in professional in-ear-monitors and hearing-aids to deliver the best possible sound and to keep power-consumption at its minimal. High-density rechargeable batteries are used to keep playback time up and size down.”

Much of the technical specs on their Kickstarter page will be of interest to audiophiles (and show just how much these makers have thought about their project), but in summary: “The architecture of the earbud is based on two main covers which are ultrasonically welded to create a water-tight seal, protecting the electrical components. The materials are carefully selected to withstand both climate and impact testing. As all project members have extensive experience of creating similar consumer products, we know what works and what does [not].”