[Easy to carry]The lanyard and hook are matched in the package, Personal alarms can attach to handbag, briefcase, backpack, or use the wristband and wear on your wrist and small enough to drop into a pocket, Do not take up daily travel space. [Waterproof design]The waterproof level is IP66, and it can be used normally even in . The alarm is exposed to the outside to protect your safety all-weather. [Night lighting & Light burst]Personal alarm can be used as lighting even at night, when lighting, you only need to the button to illuminate. twice to get the flash mode. You can choose different modes according to your needs. it can be through a computer or USB charging cable, which is very convenient and practical. [Loud personal alarm] the volume button of the alarm, you can send out the sound as ear splitting for alarm. Someone be alerted by the loud noise and came to offer help. It is suitable for children and the elderly, as well as female friends. This has a warning effect for the elderly living alone, so that people can of the needs of the elderly in time. Battery: 3.7V 130mAh Alarm time: 35 minutes Waterproof: IP66 Volume: 130 decibels size:68.8x26x17mm Material:ABS colour: black Package Contents: 1 x Personal Alarms 1 x USB data cable 1 x lanyard 1 x hanging buckle Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.