Description Used safety spotlight in dark area. Sound Frequency:About 130dB Weight: 37g Material: ABS Battery: 1.5V LR44 battery (inlcuded) Size: About 685424mm Usage: Pull out alarm rope and it will ring Color: Black Features 100% brand new. Small size and light-weight easy to carry 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. When you feel you are in danger, just pull the metal pin and it will emit a 130 db sound that will deter your attacker. the sound will also give warning to others around you that you are in danger Package includes: 1*Bettel Alarm