[130dB Security Alarm] When encountering danger, the emergency alarm can emit a loud sound to attract the attention of others. Even at a long distance (600 feet), it can also protect you from the impact of emergencies. In addition, the sound can continuously sound an ear hole alarm for 50 minutes to ensure emergency use.     [USB rechargeable battery] The personal alarm clock is made of rechargeable lithium batteries, not button batteries. No need to replace the battery. Equipped with a USB charging cable charger, the charging time is only 30 minutes, and the standby mode is about 1 year. When fully charged, the siren will continue to alarm for 90 minutes. It is a perfect substitute for traditional alarm clock batteries.     [Multi-function LED light] with LED high-intensity mini flashlight, can be used for night lighting, suitable for students, the elderly, children, ladies, night workers and other people of all ages; you can also use them for travel, hiking, camping And take a walk.     [Lightweight and portable] This security alarm key chain has a portable size, convenient to store and carry; no matter where you go, you can bring safety It can be installed on wallets, backpacks, keys, belt loops and suitcases; it can also be carried on the plane, which is very convenient.     [Super Durable and High Quality] Our portable personal alarm is made of environmentally friendly and durable material, which can resist drops, pressure and high temperature. Beautiful and durable, will not break bad conditions in most cases.          Type: Personal Alarm     colour:Black/white/pink/blue     Material:ABS     size:73 x 41 x 21mm          Package Contents:     1 x white personal alarm clock     1 x blue personal alarm clock     1 x pink personal alarm clock     1 x black personal alarm clock     4 x USB Charging Cable