One Second Breakthrough: This 2-in-1 safe hammer glass breaker and seat belt cutter is durable and reliable. With just one finger press on the bottom, the breaker can quickly shatter vehicle side window glass within one second, allowing for a safe escape in emergencies. Vehicle Window Breaker: The car window breaker features a built-in high-pressure spring and a sturdy tungsten steel tip with a hardness of 55. Combined with 20KGF impact force, it can break solid tempered glass instantly. Note: Metal tip remains inside the tool and only extends upon activation during glass breaking. Seat Belt Cutter: The seat belt cutter includes a built-in stainless steel blade with a U-shaped hidden edge design, enhancing safety and reducing the risk of hand injuries. Simply position the U-shaped opening against the seat belt and push forward to cut quickly and escape easily. Fashionable and Portable: This escape tool measures only 3.6 inches, lightweight and compact. It is easy to carry and can be attached to a keychain or secured to a vehicle’s center console using Velcro tape. Consider having one in the front and one in the rear for added safety. Widely Used: Suitable for emergency rescue, disaster response, evacuation, and life-saving situations. Important Note: Designed to break tempered glass on side windows only. Laminated glass such as front and rear windshields and sunroofs cannot be broken. A valuable addition to your safety kit.