From Strength to Strength. PowerLine's first generation boasted 12x the durability of other cables, but PowerLine II Dura takes it to the next level. It tolerates being bent over 12000 times and lasts an enormous 12x longer than other cables. Speed ​​and Safety. PowerLine II is completely authorized by USB technology's leading association—proven to work flawlessly and safely with any and all USB-C devices. Sync & Charge with total peace of mind. . . Lasts a Lifetime. To show our belief in PowerLine II, we are offering a hassle-free replacement for all quality issues. Not for half a year, not for 18 months, but for an entire lifetime. It really will be the last cable you ever need to buy