ABS fireproof PC (VO grade) it is made of the aluminum alloy through the multi- Purpose for the excellent quality: it is good at quality, not overheating while charging, eco-friendly, safe and non-toxic. Dual USB ports: dual USB ports secure the design circuit offer the current transforming in an efficient transforming. You can make charging at front seats. The charging is possible at the same time. USB Ports: you can add the cigar rate lighter: you can expend the USB Ports one to three meet the changing needs of the driver, co-driver and rear-seat passenger. Compatible with: it is compatible with the mainstream car models, including family cars, trucks, etc.