How loud is the alarm and how far can it be heard?

It produces a 125 dB siren, and the maker rates it audible up to 1,200 feet away. That is loud enough to startle an attacker and draw attention in a street or parking lot.

How do you set it off?

You pull the pin, which releases the siren. There is no code or sequence to remember, so it works under stress.

What does the flashlight do?

It has two modes: a high beam for finding keys or lighting a path, and a strobe effect for disorienting someone or signaling for help.

How does it attach to my keys or bag?

A carabiner clips it to a keyring, backpack strap or belt loop, so it stays within reach.

Does it have a silent alarm or phone alerts?

No. It is a standalone siren and light with no app, GPS or silent mode, so it does not notify contacts.

Is it good for runners and students?

Yes. It is small and clips on, and the loud siren plus light suits people moving alone at night. The trade-off is that it has no tracking if it is dropped or taken.