1. Simple control, pull the keychain to make a strong sound alarm
2. 120dB treble alarm
3. Convenient button, one key to control alarm/lighting/strobe mode
4. Material: ABS
5. Volume: 120 decibels
6. Power supply: including 4 LR44 button batteries (replaceable)
7. Applicable people: children, ladies, the elderly
8. Size: about 6.9 x 3.8 x 2.5cm
9. Weight: about 36 grams
