Micro Sonic Grenade

Teensy but wincingly noisy, this comedy ‘grenade’ emits a truly ear-splitting 110-115 decibel wail. That’s the same as a power saw. Aargh! Simply set the timer to 5, 30 or 60 seconds, hide it near your victim and scarper.

Failing that pop in some earplugs so you can point and laugh at your prey as they scrabble around looking for the source of their misery. You can even chuck it, grenade styley. ‘Fire in the hole!’

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