Intelligent SMART charging Smart intelligent dynamic USB port: Port will intelligently select the best maximum charge speed and provide the optimum charge for any USB device. Four high powered USB ports High powered charger with 24 watts/ 4.8 amps distributed through four ports. The 4 port IQ power smart USB car charger can charge your device at a much faster rate. Compact design Slim and compact size of only 9cm long and 4cm wide making it easy to store. Universal charger Compatible with many smartphones or tablets including: Most Android and Apple tablets and phones.