警察認証の携帯警報器（懐中電灯付き）

Tested it on my evening walk and that torch is bright enough to light up the whole path ahead. The key ring pull is easy even with one hand, and the siren is incredibly loud without being deafening.

Pulled the ring to test it and the siren is genuinely startling loud, exactly what you want for safety. The built-in torch is a nice bonus for late-night walks to the car.

Fits right in my palm so it's easy to grab without fumbling, and the torch actually lights up well enough to see the path ahead. The key ring pull is smooth and the siren is definitely loud enough to turn heads when I tested it in the garage.