To use a keychain light, simply activate it by twisting its head.

Adjust the direction of the light as needed by tilting or positioning the keychain.

To turn it off simply twist it in the opposite direction.

Besides its primary function of providing light, a keychain light can serve several alternative purposes:

1. Emergency Beacon: Use it as a signaling device in emergencies by flashing it in SOS patterns.
2. Reading Aid: Illuminate small print or objects in low-light conditions, such as menus in dimly lit restaurants.