(4 city blocks!). DESIGNED FOR RUNNERS COMFORT AND SAFETY: Adjustable Wrist Strap (5.5" - 8") can be worn on wrist or bicep; Reflective material ensures your seen at night, is sweat- and weather-resistant with no-itch nylon and Velcro strap.
This is just so easy to use. I run on a canal early mornings and have spotted a coyote every so often so I believe this would certainly scare it off if it got too curious. It's a great price and just simple to put on - hope I never need to use it!
I ran alone with this twice before I decided to try it. It doesn't work at all!! Thank goodness I didn't need it.
As you can see in the picture, the pin is pulled and the bulldog isn't reacting!
I'll be requesting a refund.