@explainingworld on Instagram: "How Watch Straps Actually Come Off Changing a watch strap feels mysterious until you realize it’s basically a tiny game of press and release. That thin metal rod between the strap and the watch? Push it inward, and the strap pops free. No magic. Just good engineering hiding in plain sight. Scientifically, that rod is a spring bar a small, spring-loaded mechanism designed to stay locked under tension. When compressed, the force drops just enough for the bar to slip