Car Window Breaker Bracelet

The interesting part is the tungsten carbide bead hiding in what otherwise looks like an adjustable rubber bracelet. That bead is the striker for a window-breaking tool, giving an ordinary-looking wristband a very specific second job: breaking tempered vehicle glass in an emergency.

To use it, you remove the strap, loop it around your thumb and forefinger, pull the bead back, and release. The elastic band supplies the launch rather than a handle you swing. It’s an unusual approach to a car escape tool, and the wearable format makes sense for someone who would rather keep one on their wrist than remember where they stashed it in the car.

The appeal is how little hardware you’re carrying: an elastic band and a tungsten striker, with an adjustable fit. I’d consider it for that convenience, though the claim that it doubles as a fashion accessory depends on your enthusiasm for rubber bracelets. The bigger limitation is the glass itself: this is intended for tempered side windows, and it won’t work on windshields.