It includes a presta adapter but was unable to measure pressure or add air to any of the various presta valves I tried. Using my own Presta adapter (which I know works) gave the same result. The item's stats description is incorrect when it says you can set the inflation value from 1 to 120psi. It only allows adjustment in 10 psi increments. So if you need 35 psi, for example, resort to the manual process.