ECBANLI Bracelet Car Window Breaker, Wrist Strap with Tungsten Carbide Bead Car Emergency Self Rescue Tool, Vehicle Rapid Escape Wristbands Tempered Safety Glass Breaker

I ended up buying 6 of these to share with friends. 1st pop on the window and it was shattered. Awesome tool for sure

A handy tool and simple piece of jewelry that can be worn for a long time. I like it a lot and so far I’ve been wearing it nonstop for over two months now.

These are the least bulky I’ve found, but the cord is a a bit too long. I have a large wrist and you almost can’t get them small enough to fit. A pair of scissors and an open flame to melt the ends solved the problem, but you’re really just paying for the ceramic bead.

I haven't had an opportunity to use one. Not sure in that's a good or a bad thing lol the wheel is basically a zippo strike wheel is not as dense as a spark plug but with the momentum of the stretchy band i could see it breaking out at least chipping away at auto glass. Kinda if a cute bracelet too lol

don’t break car windows quick enough. might go with something similar but with a bigger metal piece