STM Dux USB C to Lightning Grey Cable ChargePlus Technology StayFlexy Strain Relief TPU Slimmer Tips STM Dux 1.5 m Cable USB-C to Lightning is fast charging and longer lasting. How do you make a cable smarter? You make it charge fasterour ChargePlus technology enables power to move quicker, saving you precious time. You make it last longer our StayFlexy strain relief with TPU extends cable life, eliminating the hassle of replacement, while saving you precious money. And you make it more efficient our slimmer tips take up less room on crowded ports, saving you precious space.