1981: A small, battery-powered self-protection device developed by scientists from the Massachusetts Institute of Technology. It is worn on the wrist and can be easily activated to drive off an attacker with an electric shock. [Getty Images]
1981: A small, battery-powered self-protection device developed by scientists from the Massachusetts Institute of Technology. It is worn on the wrist and can be easily activated to drive off an attacker with an electric shock. [Getty Images]
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