Ultra Safe Clamp with Indicator: The smart jumper indicator notifies you of incorrect use with an audible buzz, warning tone, and flashing light, it also has reverse charge protection, overcharge protection, over current, and short circuit protection to ensure safe use.

Emergency use: Not only a car battery booster, but also a multifunctional life-saver for outdoor emergency use with a strobe, SOS signal, and built-in compass, its super bright LED flashlight can be used as a flashlight in an emergency.

LCD screen shows the remaining power: The LCD screen comes with backlit light, it can exactly show the remaining power, you can easily read the number clearly at night.

The output voltage can be switched between 12V/16V/19V, indicated on the LCD screen.

DUAL USB CHARGE OUTPUT

•  Charge any USB-powered devices including mobile phones, tablets, and kindles 3 times faster. It can be taken anywhere and quickly charge your portable devices such as smartphones, tablets, cameras, GPS, camcorder, Bluetooth headphones, and more.
•  Able to charge 2 devices at the same time, no need to buy one like other car jump starter kit.
•  It works as a compact 15V DC power source for 12V DC devices, 
•  Equipped with a 2.1A USB Output and a 2.4A smart USB port, with 18000mAh capacity, you can charge your cellphones, tablets, kindles, etc. You can also use it to charge your laptop with 8-in-1 laptop adapters (included in the package).