Weiyi Portable Car Jump Starter- 400A Peak Current and Multi-Functional With Bright LED Light & SOS & Emergency Light and 10000mAh External Battery Charger with 2 USB Ports,Red & Black With heavy duty pure copper clamps, portable but able to jump start your 4L gas/petrol or 2.5L diesel vehicle engines ~20 times in a full charge with 400 amp peak current,working temperature -20 ~ 80. The biggest selling point for this product is the specially designed smart and ultra-safe jumper clamps with very durable performance(will never be damaged or burned),simple operation but with the full protection function:Automaticlly monitor the battery voltage for high & low voltage protection,Over charge & Over discharge Protection,Short circuit Protection,Reverse Polarity Protection,Backfeed Protection,Over current Protection,over load protection. More Functions: An ultra-bright LED light with 3 modes (normal,fast strobe,SOS),and the red emergency flashlight. External Battery Charger: with 2 USB output ports 5V-2.4A & 5V-1A,All the ports have the cover for splashproof & dustproof purpose. High quality product together with CE/FCC/ROHS certifications & 12-month warranty & friendly customer service.