A Type-C connection can carry video and power over one small reversible cable, which is why it has become the standard connection for portable monitors. The evidenced portable model on this site, the ZW133, provides two Type-C interfaces, and its power supply is recorded as 5 volts at 3 amps. Those figures belong to that model.
Whether one cable is enough depends on the host. A laptop with a full-featured Type-C port can often drive the display and power it from the same port, while a laptop or phone with a data-only Type-C port may need a separate power supply or an adapter. The second Type-C interface on the ZW133 gives flexibility in how power and video are arranged, and a buyer should check the host's port capability before assuming a single-cable setup.
For travel and shared desks the single-cable advantage is real: fewer cables to pack, faster setup and a tidier desk. For fixed desks with a dock, the advantage shrinks, because the dock already handles video and power. State the host device and its ports in an enquiry so the company can confirm a matching setup.
Order quantity and lead time are confirmed per model in enquiry, and prices are not published on this site.