Wikipedia
LifeCam
The LifeCam is a webcam from Microsoft for home PC users available in various models. Its special features include an embedded microphone and integration with Windows Live Messenger, thus enabling direct Internet support. All models of Lifecam have a Windows Live Call button that causes Windows Live Messenger to initiate a video call. It is available for both laptops and desktops. The NX series is for laptops while the VX series is for desktops.