Emergency personal safety alarm. A loud sound will be emitted when the pin is pulled. The sound stops when the pin is reinserted. It's thin, so it can be put in your pocket, and the light is bright, making it safe for walking at night. Size: Length 9cm, Width 6cm, Thickness 1.5cm (2cm for the light part) New, unused, but has been stored at home for a long time. The box has stains, tears, folds, and scratches. Thank you for your understanding. Thank you for viewing.