There are plenty of pepper spray products on the market for self defense. The Plegium Smart Pepper Spray also has a 130dB alarm and triple strobe LEDs to get you out of trouble. It connects to your iOS/Android phone and sends text message of your location to your emergency contacts.
The device can also trigger a phone call to your emergency contacts when fired. Its battery lasts up to 4 years.[where to get it]
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