Material: ABS, Size: 86 * 28 * 17mm, Function: 130 decibel alarm, LED lighting, lighting time 120min, charging time 120min, alarm time 90min [130db High Volume LED Light] 130db high volume security alarm with door - keys, can make a huge sound to attract attention even remotely. Emergency security alarms can also be used as an LED flashlight to stay safe when walking your dog late at night or when you open the front door late at night. It will be a good helper for you when you encounter problems or need help. [Rechargeable via USB - C Cable] The personal alarm has a built-in 150 Mah rechargeable lithium battery. There is no need to replace the battery, just use a USB type - C cable to charge it. The full charge time is 120min and the standby time is up to 180 days. The red light flashes when the battery is low, please charge it in time. [Easy to Use] Self - defense siren with two alarm methods. You only need to remove the stylus or press the SOS button twice quickly to activate the alarm. When you have finished using, insert the loop into the hole or press the SOS button for a long time to defuse the alarm, for the elderly, children and women. [Keychain Design] This beautiful appearance Mini personal security door alarm - keys disguised as decoration is small enough to go unnoticed. Door design - portable alarm keys, making it the ideal companion to hang on purses, backpacks, belt buckles, suitcases and keys. [Multiple Functions] This security alarm is a safe necessity for your dog's travel, hiking, camping and walking. Designed for all ages, such as students, child security guards, walkers, joggers, senior citizens, night owls, solo workers. Note: When the battery is low, the warning sound and lights are reduced. Make sure - remember to charge in time.