This is one of our must-have products now and we have one for all of our vehicles for my husband and I and my daughter. This is an automatic jump start for your car which is so small & compact & takes up little room in the trunk. It also works as battery charger for your phone, flashlight & more! Our car battery is slowing going bad so we have had to use this about 4 times in the last few mos & now our whole family & both our teens can easily use this. It's just that simple to use which is what I love! My daughter & I used this in the pouring rain yesterday & it took less than 5 minutes to jump start my car & get it working again.