Features:       Low Temperature Start: Using high-rate battery technology, start vehicles even in -20& 8451;. Built-in temperature protection resistance runs well in large temperature difference environment, without damage to components. The Package: 1Pc Car Jump Starter. 1Pc Safety Smart Clamp. 1Pc Charging Cable. 1Pc User Manual.   Specifications: Attention: For jump start of 12V vehicles 1.Confirm that the electric quantity indicator light is above75%. To start the car when the battery clip in the blue plug, plug in place. 2.Red clamp connect to the positive (+) ,black clamp connect to the negative (-), do not reverse the positive and negative,otherwise it may cause danger.   4.Please take off the host within 30 seconds after the start of the car, otherwise it may be cause safety accidents. 5.It Is Recommended Not To Leave The Product In The Car During Hot Weather. Item Name: Car Jump Starter   Material: ABS+meta Exterior Color: Black and red optional Cell Type: A Level High rate batteries, 62.15Wh.     Indicator Light: 25%,50%,75%,100%. Fully Charged Time: About 4 hours (Different adapters may have different times) Cycle Life: ≥1000 times Start Output: 12V Type-C Charging Input: 5V/2A USB Output: 5V/2A Start Current: 300A Peak Current: 600A Operating Temperature: -20& 8451; to 60& 8451;/-4& 8457; to 140& 8457; Item Weight: Approx.276g/9.73oz Item Dimensions: Approx.139x78x24mm/5.47x3.07 x 0.94in