HSTSS Sound Grenade Sound Grenade Compact, lightweight Re-usable 130 Decibel siren Personal Alarm 130 The SOUND GRENADE+ helps us explore with confidence. It is an ultra-compact personal alarm, small in size but big in sound. Once you pull the pin, the device emits a 130 decibel (ambulance-level) alarm. The siren will sound continuously for 30 minutes unless pin is returned to device. The SOUND GRENADE+ allows maximum utility for those intending to use in the outdoors with […]

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