Feature(may vary by option.)

●Size: Product Dimensions (W x D x H): 1.2 x 0.8 x 2.3 inches (3.05 x 2.1 x 5.85 cm) (not including strap)

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Description

Loud 85dB even with a mini security buzzer.
(Public Goods) National Security Association Recommended, Excellent Security Buzzer (No. 17H208)
You can pull the pin out of the body and throw it far away.
Can be easily attached to a bag, etc.