Lightweight and Portable: This car escape tool measures only 3.6 inches, making it compact and lightweight. It does not take up space in your vehicle and can be attached to a keychain for easy carrying. Each safety hammer includes a base with adhesive backing for secure mounting in your car. Ideal for multiple placements, such as front and rear seats. Essential Safety Tool for Automobiles: This underwater safety car window breaker and seatbelt cutter helps you and your family escape quickly during emergencies. The window breaker functions effectively even underwater,不受水压影响, providing reliable performance in situations like vehicle rollovers, electrical failures, car fires, floods, submersion, and other unexpected events. Vehicle Window Breaker: This 2-in-1 safety hammer features a built-in high-pressure spring and a durable tungsten steel tip with a hardness of 55. Delivering up to 20KGF of impact force, it can shatter side window glass instantly. Note: The metal tip remains recessed within the tool and only extends upon activation during glass impact. Easy to Use for All Ages: Designed for universal use, this compact window breaker and seatbelt cutter allows quick escape in emergencies. It requires minimal effort—one finger is sufficient—to break the window within seconds. Suitable for adults, children, and seniors, it ensures everyone can operate it effectively during critical moments. Seat Belt Cutter: The safety hammer includes a sharp stainless steel blade with a concealed U-shaped design to enhance user safety and reduce the risk of accidental cuts. To use, simply position the U-shaped blade against the seat belt and push forward to quickly cut through a jammed belt.