The Nekteck USB Type-C PD 45W PPS AC Charger (with Captive Cable) can take advantage of USB Power Delivery 3.0 based PPS (Programmable Power Supply) and Augmented PDO's for rapid charging over the Type-C interface. This charger is unique in that there aren't a lot of 45W PPS chargers (the first one released in to the market was the Samsung 45W Super Fast Charge Wall Charger).
It's fastest to charge recent USB Power Delivery 3.0 capable phones like the Apple iPhone 11 Pro Series or Android phones such as the Google Pixel 4 XL or even USB Power Delivery enabled PC's and tablets like the Apple's MacBook 12" Retina 2017 and 11-inch iPad Pro (2018) or the Dell XPS 13 9370 and the Google Pixelbook. Note this charger does not support Samsung's PPS based phones such as the Galaxy Note10+ and Galaxy S10 5G.
On its packaging the Nekteck USB Type-C PD 45W PPS AC Charger (with Captive Cable) can be seen to advertise the USB-IF certification logo.
The Nekteck USB Type-C PD 45W PPS AC Charger (with Captive Cable) comes with a tethered USB Type-C cable which means you don't need to use a separate USB Type-C cable with the charger.
The Nekteck charger states to support up to 45 watts output using fixed PDO's (Power Delivery Objects) of 15 watts (5 volts @ 3 amps), 27 watts (9 volts @ 3 amps), 45 watts (15 volts @ 3 amps) and 45 watts (20 volts @ 2.25 amps) as well as variable power of 13.3-44.5 watts (3.3~11 volts @ 4.05 amps) and 9.9-48 watts (3.3~16 volts @ 3 amps) power profiles.