Birud Defence Emergency Alarm in Keychain for Women Safety 130 dB Loud Emergency Personal Siren Ring with LED Light, SOS Safety Alert Device Key Chain for Women, Kids, Elderly, and Joggers Easy Operation There are 2 quick and easy ways to instantly set off the alarm in just one second - Pull to remove the safety pin or consistently press the SOS button twice to set off the alarm & hold the SOS button for a long time or put the safety pin back to silence the alarm. Bright Flash Light It is equipped with high-intensity LED light beads that have two lighting modes that include a flashing mode and an illumination mode - people are not only illuminated, but when in danger, they can also receive a flashing attack USB Rechargeable Comes with an in-built 130mAH battery that is not only efficient, but also has a long-lasting service life - it can be recharged via any USB charging device, consumes less energy and does not need to be recharged frequently.