* When in danger, as long as the key ring will sound loud, high-decibel volume, to attract the attention of passers, to avoid the bad guys will be an opportunity!

* In major disasters, search and rescue personnel are more easily found in life-saving supplies

* Emergency pull cords, in case of an emergency, you can just simply pull

* Convenient to use and carry, low power consumption, ultra-loud alarm

* Also a good present for kids, elderly and friends