You are bidding on one (1) Mengde 120db very loud Emergency Personal Alarm Keychain SOS for joggers, runners, cyclists, or walkers. Can be attached to keychain or purse. 120dB LOUD SOUND. The alarm sounds great, people can draw attention even in a far distance. Good for adventurer who is in dangerous situation. The sounds could last 40-60 minutes and the sound will be gradually loud, in addition, it will not hurt your ears 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 battery MANY USES. Fit 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.