1. Material: ABS 2. Volume: 130dB 3. Output: 4.5V 4. Battery: LR44 button battery x 3 (battery included in delivery) 5. Standby time: 8-12 months 6. Long ringing time: 1.5 hours 7. LED constant light time: 24 hours 8. How to use: pull out the metal pin of the personal alarm, and the alarm will sound immediately; push back the pin, and the alarm will be turned off immediately; press and hold the switch to turn on the LED light, and release it to turn off. 9. Product size: 6.6 x 3.8 x 2.8 cm 10. Weight: 43 grams
