Security Alarm Buzzer - Body Only - No Packaging - Set of 2 - Great Deal! I'm selling these because I never had to use them, and my children have grown up. In today's world, things can be unsettling, and I was reminded of how much I want my children to live peacefully. Both have been tested and are working. The silver one is the Yoshio Water-Resistant Security Buzzer "PAW-35". * High Volume: When the pin is pulled, a loud buzzer sound of approximately 105dB (decibels) will sound. * Water-Resistant: Water-resistant design allows for use even on rainy days. * LED Light: A white LED light flashes while the alarm is activated, alerting those nearby. * Power: Uses 2 AAA batteries. The light blue one is the KUTSUWA Co., Ltd. Security Alarm "STAD SL018BL". * The volume is up to 93dB and lasts up to 5 hours. * Made of impact-resistant plastic. * Includes a belt for attaching to a school bag and a metal hook for attaching to a bag or belt. * Features an LED light function, convenient in dark places, and a whistle that can be used when the battery runs out. * Uses 2 AAA batteries.