The drill chucks that work with this screwdrivers are of the keyless kind. The screwdrivers runs on a rechargeable battery, so it's cordless.
From Amazon
Einhell TC-CD 18-2 Li Cordless Drill Driver With Battery and Charger | 38Nm, Slim Design, Lightweight 18V Combi Drill With LED Light | 2-in-1 Drill And Screwdriver With Storage Case
Robert Dyas
Einhell 18V Cordless Drill/Driver with 1.5AH Li-Ion Battery