Resistant to Low Temperature: The built-in high-rate safety polymer battery cell is resistant to low temperature. It works even in subzero temperature. Low Power Consumption and Long Battery Life: This jump starter keeps more than 85% battery after in standby mode for a year due to 0.05mAh of power consumption and long battery life Dual USB Output: The Two USB ports 5V/2.1A 5V1A are compatible with tablets, laptops, phones and support charging Emergency Lighting and Charging: This multi-use jump starter can serve as an emergency light and a fast charger for phones, computers and other devices. Five-proof smart battery clip: anti-short circuit, anti-reverse connection, anti-overcurrent, anti-reverse charge, anti-overdischarge. Jump Starter from Zero Voltage: 600A of peak current is powerful enough to jump start a 6.0L gasoline car in a second. Charge Once For 50 Times of Jumpstart: The high-capacity battery can continuously start a 3.0L Car more than 50 times. Material: plastic colour: Black Package Contents: 1 x Car emergency start power supply 1 x USB cable 1 x EvA storage bag 1 x Smart Battery Clip 1 x English instructions