When your car battery's flat, the BlitzWolf™ K3 jump starter makes starting easy and you can start your engine in 4 easy steps. Fit for cars with a displacement below 4.0L for gasoline and for diesel below 2.5L. Dual USB ports provide versatile power for your phone,tablet or any USB gadget. Buy this product and Get 15% OFF For BlitzWolf™ K3 400A Jump Starter Multi-Function Car 12000mAh Dual USB Power Bank. Use Coupon Code: K3Start.