3 Way Switch Connection. Many of the conductor connections will be made in the light's device. The white wire of the cable wiring is.
For starters, it doesn't have "OFF" and "ON" printed on the toggle, and it doesn't have a top. Three-way and four-way switches make it possible to control a light from multiple locations, such as the top and bottom of a stairway, either end These switches appear externally similar to single pole, single throw (SPST) switches, but have extra connections which allow a circuit to be controlled from. Both switches had one black wire connected to the common and then red and white connected to the travelers.
Understanding how the circuit works satisfies curiosity.
Are you hoping to join the two lights so they come on together or have two two way circuits?
Make notes or take a picture to verify connections before removing the old switch. Three way is one light with three switches. Making them at the proper place is a little.