Compact and thin enough to storage in your wallet/pocket as a credit card.
Multi-functional as the picture shows,can meet your daily need perfectly.
Come with a emergency whistle which can make a loud noice in the open air.
Can be used as Finger Knife, Magnifier, Bottle Opener,Straight Screwdriver, Ruler, Compass, Hex Screwdriver, Mini Tweezers, Toothpick, Magnesium Fire Starter and other extending functions.
Get one, make your daily life more convenient and even more confident in emergency.