[Optimal Charging]: Charge two devices simultaneously at full speed with 5V/2.4A of dedicated adaptive power output per USB port and 5V/3.4A total. | [Universal Compatibility]: Works with all USB-powered devices including Android & Apple smartphones & tablets. | [Guaranteed Safety]: Premium circuitry with built-in high-temperature, over-charging, over-current, over-voltage and short-circuit protection, guarantees a 100% safe charging experience. | [Cost-Effective]: 10-pack provides a spare portable car charger to keep in your travel bag or a second vehicle.Spend less money for a better shopping experience. | [What you get]: Buy it now and get 10 excellent 2-Port USB car chargers with Smart IC Technology and 12-Month warranty.