The Sonic Devestator

Forget mace. If you're in the market for a personal mugging deterrent, or perhaps if you have an ex-friend you really want to deafen, peep the $300 Sonic Devestator from Future Horizons. It's a handheld, battery-powered device outfitted with an output transducer that emits intense ultrasonic blasts at 130 decibels. At that level, it's safe to say you'll be able to startle any would-be attackers in the near vicinity — supposedly effective in the range between between 20 and 50ft. To say that this device produces "irritation" is, well, an understatement.