*Lightweight, compact design for easy carrying.
*Clip to your handbag, backpack or use as a keyring to your wallet's zipper,cellphone's strap.
*Perfect for students, joggers, elderly, disabled, night shift workers, people who live alone.
*Protect you out of risk when you encounter in danger surrounding or meet some bad man.
*90 DB loudness can attract other people's attention enough
Size: 6cm x 3cm
Powered by button batteries
Sound Frequency:About 90dB
Usage: Pull out alarm rope and it will ring