Up to 18W PD output is supported. The actual test only takes thirty minutes, and the iPhone XS MAX will boost battery life by more than fifty percent. Over 2.5 times quicker than typical 5W charging Narrow head design that fits easily; no need to take off the phone case, plug it in, or charge it Integrated connector design for increased durability Soft TPE wire that's convenient to store Internal nylon anti-broken wire that has passed more than 15,000 swing tests and been certified by USB-IF and MFi