1. Material: aluminum alloy + ABS 2. Process: sandblasted + oxidized 3. Tungsten steel hammer-head, can easily cut metal, glass 4. Press gently, the hammer head pops out automatically to break glass 5. No fear of water pressure, easy to break windows underwater 6. Hidden blade design, fingers can not reach, to prevent cutting fingers 7. Mini and simple, can be carried around 8. With a storage base, can be attached to the car at will 9. Sharply cutter, the seat belt is cut off, quick escape 10. Size: about 21 x 27 x 92mm