• The car window breaker keychain includes: car window breaker, seatbelt cutter, whistle. In the event of an accident or other emergency, the glass breaker can quickly break the glass of the car side window, the seatbelt cutter cuts off the stuck owner's seatbelt in 1s, and the rescue whistle can provide up to 80 decibel dB sound power, enough to be heard over half mile away. Works great as distress whistle.