Features Color: Red Weight: 1.16oz Size:3.5*1.6inch Material: Aluminum Alloy + ABS Purpose: Escape and self-rescue Includes：a safe hammer and a test glass Window Breaker & Seatbelt Cutter(Red) Window Breaker: With fingers press, the solid window glass can be broken in one second, allowing you to quickly get out of the emergency. Seatbelt Cutter: Align the U-shaped mouth of the cutter with the seat belt, push it forward quickly and get out of the vehicle easily and quickly. Tungsten Steel head Crafted with a solid Tungsten Steel head, it boasts a remarkable rockwell hardness of 55, making it capable of cutting through metal and glass with ease. U-type hidden knife edge design The seat belt cutter composed of ultra-thin blades with a U-type hidden knife edge design, safe from injury to hands. Break a window underwater easily This window breaker can easily break the window underwater and the instant impulse is greater than 120kgm/s. Choose Efficient Operating Points 1.choose the nearest side window rather the windshield or skylight window. 2.focus on the four corners of the side window to break, which is the weakest part. And the priorities are shown in the figure. Easy to Carry Around -You can hang it in the car or stick in the dashboard of your car. Mini & Simple It's small and simple, upgraded with a quick-pull out transparent cover that can be identified at a glance in case of an emergency.