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 align the U-shaped opening with the seat belt and push forward swiftly to cut cleanly and escape quickly. Fashionable & 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. Ideal for placement in both front and rear seating areas. Widely Used: Suitable for emergency rescue, disaster response, personal safety, and unexpected situations. Important Note: Designed to break tempered glass only, such as side windows. Laminated glass, including windshields, rear windows, and sunroofs, cannot be broken with this tool.