 "Logitech C920 Webcam 30 fps Black USB 2.0 (960-000764)" (960-000764) from Solid Signal"
"This flexible and adjustable HD webcam by Logitech outperforms built-in webcams.  Connect with everyone in Full HD 1080p on Skype, or in fluid HD 720p on FaceTime for Mac.  Also make high-quality video calls with Google Hangouts and video-calling clients. Even chat with your Facebook friends with video calling powered by Skype or Facebook Messenger." 
 "Logitech C525 (8MP) HD Webcam" Webcam - 960-001064 | CCL Computers"
"

                                HD 720p video callsEnjoy widescreen HD video (720p) on most major IMs that support HD video calls.Get closer with autofocusYou’ll enjoy razor-sharp video calls even in extreme close-ups (up to 7 cm).Goes where you goSlip it in your bag, purse, even your pocket—with its fold-and-go design, this webcam goes wherever you go.

                            " 