• Lightweight, compact design for easy carrying
• You can hang it on your handbag, backpack, or connect it to your wallet's zipper, cellphone's strap, etc.
• Perfect for students, joggers, elderly, disabled, night shift workers, people who live alone
• Protect yourself out of risk when you encounter in danger surrounding or meet some bad man
• 90dB loudness can attract other people's attention enough
• Easy to use, pull out alarm rope and it will ring

Specification:

• Size: 5.5cm x 3cm
• Material: ABS
• Battery: Button battery (included)
• Volume: about 90dB