"Anti-crime buzzer & light, Burutan Blue self-defense, whistle green" ① The anti-crime buzzer (despite its small size, the sound is loud!) ◇ It will be helpful in an emergency!! ② The whistle green is also quite loud!! ③ Burutan Blue can be carried as an accessory, and is recommended for women to use in places where they might be attacked to protect themselves in case of an emergency!! ④ The buzzer & light come with batteries!! Thank you for viewing!