The Cube Cupla has a small size, about as wide as a quarter. The button is 0.39 in. by 0.55 in. and easy to push. And the O-ring is located inside the socket to minimize scratching.
Nitto Kohki is touting the Cube Cupla as suitable for a wide range of applications, from medical/scientific equipment to beverage machines or semiconductor manufacturing devices.
Here’s a video showing off more of the Cube Cupla’s features: