describe: feature: 100% brand new and high quality. This keychain security alarm doesn't need to be recharged because it has a super long standby time. It can also be used as an emergency light at night, and one machine can be used for multiple purposes. With a high-decibel sound and high brightness, this keychain security alarm can scare away bad guys and easily grab people's attention and make you ask for help. The key chain security alarm is made of ABS material, which is environmentally friendly and durable. The key chain burglar alarm is 7.3cm long, 4.1cm wide and 2.1cm thick. The key chain security alarm is suitable for female runners, pregnant women, children, the elderly, etc. Product name: key chain security alarm Material: ABS Alarm sound: 130dB Charging voltage: 5V Charging current: 1A Battery capacity: 130mAh (included) Charging time: about 30 minutes Lighting time: about 75Min Alarm duration: about 50 minutes Flashing time: about 5.5H Features: Self-defense, high decibel, easy to operate notes: Due to different lighting and screen settings, the color of the item may be slightly different from the picture. Due to manual measurements, please allow for slight size differences. Double-click the S0S button to activate the alarm or long press the S0S button to deactivate. The package includes: 1 x Keychain Security Alarm notes: 1. Due to manual measurement, there may be a slight error of 1-3cm. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.