[1-Second Window Breaker] The Seoul window breaker is equipped with a silicon steel hammer and a high-pressure dual-chamber spring that instantly releases at a speed of over 20 meters per second, allowing it to quickly shatter windows even underwater. [Quick Seatbelt Cutter] This car escape tool features a built-in seatbelt cutter with a stainless steel blade, enabling you to quickly cut seatbelts and escape in emergencies, even with one hand. This safety hammer-style car window breaker uses a U-shaped design for safety. [Non-slip and Ergonomic] The car safety hammer has a non-slip grip and an upgraded ergonomic handle design, allowing for one-handed operation, a secure grip, and preventing accidental drops, saving time in emergencies. It can be safely used by seniors, women, and teenagers. Older models required significant effort to use. [Portable and Lightweight] The seatbelt cutter and window breaker keychain is only 7.1 cm long and weighs only 27 grams, yet it is powerful. It can be carried as a keychain or conveniently hung in the driver's cabin or back seat, ensuring you have a reliable emergency solution wherever you go. [FAQ] A safety hammer is an essential safety tool for car emergencies. The window breaker is only suitable for tempered glass, not laminated glass. It automatically resets after each use. For safety reasons, do not press the window breaker with your hand.