Headset

A headset also belongs to Lara's gear in Tomb Raider Legend. With this she will be able to communicate with Zip and Alister back at the Mansion and allows them to see what ever she encounters. This device cannot be switched on or off.

from the official site

Lara's hi-tech, advanced eyes and ears. Her headset keeps her in tough with Zip and Alister back at the Mansion and allows them to see what she sees and communicate with her.