If your key is already in the car ignition, use the quick release to separate the spray from the keyring. It has a 10-foot range, so you can protect yourself at a distance, without having to leave the safety of your car. That is how the quick release keyring works. It's great for early morning joggers in parks and for evening drives to unfamiliar locations. This pepper spray keychain is also ideal for students walking across campus at night. It's small and discreet, yet powerful.