Description Material : ABS + Metal Quantity:5ps Color:Gold, Blue, Silver, Black and Purple Dimension: 2.7 x 1.7 x 0.7 inch/6.8*4.3*1.8cm Weight:260g Battery:LR44*3 batteries, 110mA, 6V Loudest Sound:130-140lb Sound Reach:600ft/183m Continuous Siren:Up to 50mins LED Brightness:85lm LED Working Time:24hours lighting Features: 130db Loud Safesound signal-The emergency alarm can make a loud sound to draw attention to protect you from danger,it is effective as far as 600 ft distance. Continuous Alarm- Sounds could last 50 minutes continuous ear-piercing alarm. Multi-function: To be LED lighting Torch applied for night lighting, suitable for people at all ages such as students, elderly, children, women, night workers and so on;can also use them for traveling, hiking, camping and dog walking at night. Mini design and convenient for easy storage and carrying anywhere,just attach it to womens bags, backpacks, school bags, belt loops, suitcases, keys, dog belts and so on. Made of Superior environmental and durable ABS plastic, resistance to fall, crush. You can change new batteries using screwdrive to open the rear cover when the alarm sound begins to get quieter or after you have been using it for about 12 months. How to use: 1.Put out the Contact Pin of the rope,then you will hear super loud alarm sound. 2.Insert it in ,then alarm off.