Emergency Personal Alarm Keychain - WER 120db SOS Safety Emergency Alarm for Women, Kids, Girls, Superior, Explorer Self Defense Electronic Device Bag Decoration(4 PCS) UNIQUE AND COMPACT DESIGN - Black color and special dedicate painting style make this alarm more unique and fashionable. Size: 68 * 42 * 23mm; Net weight: 25g/pcs. Pull out the pin,alarm on.Insert the pin,alarm off. VERY LOUD ALARM - Volume:120dB, it helps call for assistance in an emergency and helps deter attacker,even in a far distance. The sounds could last almost 40 minutes with no harm to the ears. HIGH QUALITY AND DURABLE - The personal alarm is made of environmental material, won't break in most adverse conditions. It can be reused, non-disposable. Also the battery(23A, 12V) is replaceable. USED WIDELY IN LIFE - Ideal for Students, Jogger, Elderly, Kids, Women, Night workers. It's also a security necessary supply for traveling, hiking, camping and walking the dogs. RISK FREE PURCHASE - At WER, we have great faith in our alarms. After all, we use them ourselves! Each one of them comes with a 1-year warranty AND a 3-month money back guarantee.