Powerful Car Battery Jump Starter: YESPER X1 portable jump starter with air compressor adopts QDSP technology to increase the starting capacity by 3 times. Through the disruptive innovation of battery/component structure, the booster pack jump starter reduces the starting temperature and equalizes the temperature to ensure safe starting

3+3 Air Compressor with Car Jump Starter: YESPER X1 jump starter with air compressor can quickly inflate car tires to 30 PSl in just 3 minutes, unique turbocharged 35L/Min (150 PSl) lasting 25 minutes. 3 different nozzles& 3 Preset Modes can be used to inflate suv, cars, bikes, balls, etc. Equipped with Smart preset & AUTO-STOP. LCD clearly displays the remaining power and working status. Because of the AUTO-STOP function,Never have to guess the exact amount of power left and over-inflation

Super Large Capacity and Peak Power: The jump start battery pack can start the car (up to 8.0L gasoline or 6.0L diesel) up to 20 times with a peak current of 2000 amps and heavy-duty clamps and cables. Jump box can restart the car even if the car battery is dead. In addition, it is also able to start trucks, motorcycles, snowmobiles, ATVs, UTVs, lawnmowers, and yachts

Portable & Multifunctional: Designed with 1 USB output port (5V/2.1A), the USB port can fully charge mobile phones, tablets, and other mobile devices at the fastest speed; the car jump pack LED work light has three modes: flashlight, strobe light, and SOS light. This multi-purpose portable jump starter weighs only 635g, suitable for camping, outdoors, indoors, emergencies, travel, and other uses

Improved Safety Technology: The car jumper starter portable kit is safe and easy to use, with corresponding green/red lights for correct/incorrect connection, no need to worry about incorrect connection or sparking. Car kits for emergency has anti-spark, reverse polarity protection, low voltage protection, overheat protection and overload protection. You can safely connect it to any 12V car battery

In the Box: The package includes a portable car lithium battery starter, a smart battery clamp, a mobile phone adapter cable, a user manual, a multi-function gas nozzle and a pump tube

NOTE: If the jump box for cars is not used for a long time, it is recommended to charge the jump starter every 3 months to keep the battery charger and jumper starter healthy. Working temperature: -4℉ to 140℉. Using this product at high temperatures or placing it in a high-temperature environment for a long time is forbidden. Jump-starting the car continuously at a high frequency is forbidden. Allow the spark jumper to cool for at least 1 minute between each start