Swann SW234-PC2 PenCam, Mini Video Camera & Recorder in One, 2 GB Internal Memory, DVR-421 Gold Trim Fully compatible with Windows XP, Vista and 7 and, once recorded, files can be played back on all the popular video playing software formats including Windows Media Player, Quick Time, Real Player, VLC, WinDVD and PowerDVD. Internal Memory: 2GB; Backup Type: USB Charging: USB via computer; Battery Charging Time: Approximately 90 minutes Dimensions: 5.9 x 0.6 x 0.6; Weight: 1oz Pack Contents: PenCam DVR, Pen Ink Refills (black) x 3, USB Cable, Software CD, Operating Instructions