A coin-format object built around a single deliberate tactile event — a click, a snap, a thunk — that you can trigger repeatedly with a thumb. It compresses the whole satisfaction of a mechanism into a pocket-coin footprint.

Common object types

Button and dome-snap coins, magnetic-detent coins, ratcheting coins.

What affects feel

The mechanism behind the click — a domed metal disc, a sprung detent, or opposing magnets — plus the force needed to trip it and how cleanly it resets. Mass and diameter set the heft in the palm.

What affects sound

The click element itself, the coin’s material, and the cavity around the mechanism that resonates the event.

What can go wrong

A click that fatigues or deadens with use, inconsistent reset, a dome that fails to pop, and edges sharp enough to be unpleasant in the hand.

Collector terms

Click, snap, dome, reset, thunk.

Related

Detent mechanism, magnetic mechanism, brass, titanium.