Test: if you want to  test it work when you got window breaker , or you could use book or wood to test it !!!
     Features:
Function: broken window/ partition seat belt
The 2-in-1 lifesaving compact emergency car safety tool: this emergency keychain hammer provides peace of mind to yourself and your family on the road in case of car entrapment. Can be used in various situations such as rollover, electrical system failure, car fire, floods, sinking car accident.
Jammed seatbelt cutter: the razor-sharp, stainless-steel blade allows to cut a jammed seat belt in no time. Slice the seat belt diagonally for a quick and clean cut. Can be used multiple times.
  Parameters:
Product Name: Car keychain safety hammer
Color: black/ blue/ red/ green/ orange/ yellow
Material: ABS
Size:75*15*35mm
Packaging: OPP bag
Weight:21g
  Note:
Tempered glass window breaker: the solid, heavy-duty, stainless-steel spike easily breaks tempered glass car side windows. Hit preferably one of the corners of the window for better result.