One Second Breakthrough: This 2-in-1 safety hammer features a glass breaker and seat belt cutter designed for durability and reliability. With a simple press of the button, the tool can quickly shatter vehicle side window glass within one second, enabling a safe escape during emergencies. Vehicle Window Breaker: Equipped with a built-in high-pressure spring and a sturdy tungsten steel tip with a hardness of 55, this car window breaker delivers up to 20KGF of impact force to break tempered glass instantly. Note: The metal tip remains recessed and only extends upon activation when breaking glass. Seat Belt Cutter: The integrated stainless steel blade features a U-shaped hidden edge design for enhanced safety and reduced risk of hand injuries. Simply place the U-shaped opening against the seat belt and push forward to cut through it quickly and efficiently. Fashionable and Portable: Measuring only 3.6 inches, this lightweight and compact tool is easy to carry. It can be attached to a keychain or secured to a vehicle’s center console using Velcro tape. Consider keeping one in the front and one in the rear for added preparedness. Widely Used: Ideal for emergency rescue, disaster response, evacuation, and life-saving situations. Important Note: Designed specifically for breaking tempered glass on side windows. Laminated glass, such as front and rear windshields and sunroofs, cannot be broken with this tool. A valuable addition to your safety kit.