The 3-in-1 seat belt cutter is a small versatile tool that can save your life in case of emergencyit is lightweight with key chain and easy to carrying. SOS whistle:asking for help with high decibels sounds in emergency. To cut the seat belt:the safty blade can be used to cut the seat belt in case of emergency. To break the window glass: in case of emergencyyou can use the tool to break the window glassremove the cap of the toolpress the trigger of firing pin against the window until it clicks Model E-101 Quantity 1 Piece Color Yellow Material ABS plastic Function 3-in-1: SOS whistle Seat belt cutter window break Other Features With keychain Packing List 1 x 3-in-1 Keychain