Mengde 120db Loud Emergency Personal Alarm Keychain SOS Keyring for Women, Kids, Girls, Superior, Elderly, Student, Explorer Self Defense Electronic Device Bag Decoration, Black 120db Loud Sound: The alarm sounds great, people can draw attention even in a far distance. The sounds could last 40-60 minutes and the sound will be gradually loud, in addition Multi-functions and Environmental Design. Black color and special painting style make this alarm more unique and fashionable while providing self defense protection. The alarm can be reused, Non-disposable product. And the battery is replaceable Many Uses: For Students, Jogger, Elderly, Kids, Women, Night workers. It's also a security necessary supply for traveling, hiking, camping and walking the dogs. The design and function is ideal for all ages Small and Portable: This personal alarm keychain is small and portable, can be attached on ladies bag, schoolbag, backpack, belt loops, suitcases, keys, dog Leash. And it can be brought on board a plane, very convenient With Instructions and Guaranteed: Within one year, any fault caused by non-artificial reasons we will maintain freely, please feel free to contact us