Characteristics: High decibel personal safety alarm, close range test up to 130 dB. Smooth line, high quality, small and exquisite, practical and durable. With stainless steel belt clip, easy and convenient to wear. Extremely durable key ring can be hung on a bag or key. Simple operation, women or students just pull the inserted link at the bottom to open the alarm for help when needed. Both a perfect gift and a practical alarm suitable for the elderly, night walkers, athletes, people with disabilities. Specification: Material: ABS Black colour Battery: 3 * AG13 batteries Volume: 130DB Keychain Length: Approx 17cm / 6.7in Size: About 66.5 * 42 * 24mm / 2.6 * 1.7 * 0.9in Package weight: approx. 54 g / 1.9 oz Package List: 1 * Personal Security Alarm 1 * User Manual