DC Advanced Charging Technology Combine to ensure the fastest possible charge, Two ports pump out 12 watts of power. That's enough to charge two devices simultaneously! Multi-Protect Safety System Surge protection, temperature control and more advanced safety features keep you and your devices safe. Compact Design Slim, sleek, and incredibly compact to stay out of the way when plugged in. Charge Fast and Save time, Ideal for A Long Journey! Stay Fully Charged All the Time, USB car phone charger is able to charge compatible devices up to 2 times faster than conventional chargers, you can charge your compatible devices to 80% in 50-60 minutes (Depend on device), which greatly saves your time and allows for efficient charging.