AutoEC 3 in 1 Emergency Hammer Keychain Car Escape Tool (Seat Belt Cutter + Car Window Breaker + Whistle Life Hammer) Seat belt cutter,Car window breaker,Whistle. Compact, lightweight , powerful. The multi-tool is made of ABS plastic and metal Necessary for every driver and passenger. Push the item on the glass, it will jump out of a piece of steel, very powerful magic firing pin, then instant bump breaks glass. To break the window: In case of emergency, you can use your car kit to break the window, remove the cap, press the trigger of firing pin against the window until it clicks.To cut the seat belt: The safety blade can be used to cut seat belt in case of emergency.