Product size: 66x 37x 22mm. 130dB loud130dB personal alarm with key fob, can emit loud sound to attract attention even at distances up to 0-150m. And the sound can be continuous alarm about 30 minutes. It will be your good helper when you have trouble or need help. LED LightThe emergency security alarm can also be used as a LED flashlight, keep your safety when an evening walk with a dog or when unlocking your front door late at night. It is your best helper in a dark situation and burns gangster's eyes with its dazzling light Keychain DesignLightweight and portable alarm keychain design, making it the perfect companion to hang on your handbags, backpacks, belt loops, suitcases and keys. Pull the ring switch, immediately emit a 140dB alarm sound, insert the pull ring, turn off the alarm Multiple functionsThis security alarm is a security necessity for travel, hiking, camping and walking the dog. Designed for people of all ages, such as students, child safety, walkers, joggers, seniors, night owls, lone workers Wonderful GiftsThe Portable Personal Alarm uses premium eco-friendly and durable ABS plastic, the security alarm keychain has a portable size for easy storage and carrying. They are exquisite gifts sent for your friends, relatives, the elderly or even children. Note: It is recommended to check the alarm every two weeks, make sure the personal attack alarm is working well