The timing thing is to validate his plans--to check on how accurately he planned things out in terms of timing.

Why is the watch in equalizer?

The watch has a prominent role in the films. Denzel plays Robert McCall, a retired Marine and Defense Intelligence Agency operative. He uses the stopwatch function of the Suunto watch frequently throughout the two films, timing his close combat fights.

Does Robert McCall have powers?

In The Equalizer, Washington's character Robert McCall is a former intelligence officer who uses his astonishing powers of observation to identify sharp everyday objects with which to despatch his enemies.