Gears of Kesmai
Illyrian jewelsmiths craft these for form and function.
Keen Senses: Wearers receive a +2 bonus on Perception checks.
All Illyrians begin with a pair of ear-gears
The Illyrian nobility accentuate their elven ancestry any way they can; but ear-gears are worn by nearly every member of that nation. They are usually referred to as “Illyrian gears” in gentle society or just “gears” within Illyria, though “ear-gears” is common enough.
They work by reacting to particular vibrations and changes in light waves. It does take time to learn to use them and first-time wearers experience mild disorientation and some times vertigo in the worst cases.