Mengshen Wireless Electronic Anti-Lost Stolen Reminder Locator Finder Personal Guard Child Kids Pets Luggage Theft Safety Security Alarm System Keychain Set MS-FD07Blue Ideal product to protect your child against lost in public places, such as park, garden, shopping mall etc. With a string & a snap hook, easy to carry Loud alarm for everyone nearby to hear Warning tone and vibration to alarm Both Receiver and transmitter have Led indicator