Made of plastic and electronic compound material, easy to use. Mini size, portable design, build in , all of that make you use it more freely. Just need to plug the latch out to make it noise, also it can be use as an simple LED light. Feature - Color: Golden. - Material: Plastic. - Size: Approx.5 x 5 cm. - 130dB, loudly sound to draw people's attention even in a emergency distance. - Powered by 3 x build in LR44 , can use many time. - Pull out the latch to activate the alarm, easy to use. - Also it can be use as an small size LED light in night. - Unique design, small size and light-weight, easy to attached to your keychain, schoolbag, belt , keys. - A option for any age. for children, the old, joggers, , lone workers. Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Package list: 5 x Emergency Personal Security Alarm