Efficient Escape Tool: The powerful car window breaker was designed to break tempered windows efficiently than a traditional car hammer, escape emergency. Especially suitable for underwater escape, not afraid of being disturbed by water pressure and escape quickly in the water. Durable Tungsten Steel: The car escape tool is made of tungsten steel materials. Strong, durable and long lasting tungsten. Just pull the protective cap, fast impact on the car side window corner, the windbreaker only takes 1 second to break the window. Concealed Seat Belt Cutter: The mini car seat belt cutter security can be perfectly hidden in the automotive escape tool, the sharp stainless steel blade allows you to cut the car seat belt quickly, just pull the cutter protection cover horizontally to use in an emergency. Lightweight and Portable Keychain: Compact size makes it easy to carry and access. The portable escape tool only weighs 1 ounce which can be stored and hung in your car, bag, or key chain, providing access to rescue in an emergency. Improved Spring-Loaded Design - The Safety Hammer Auto uses an upgraded version of balance arm and high pressure spring, even a little power can be transformed into a force impact force and break the tempered windows.