Triplex Network Digital Video Recorder with DVD-RW, multi-channel digital video recorder with 250GB hard drive. Network and Internet remote viewing with optional broadband router. Triplex technology for simultaneous view, playback and record. Pan, tilt, and zoom camera controls via RS485 interface, channel audio input, USB 2.0 input for video backup and firmware upgrades. VGA and composite video output. Adjustable frame rate for each camera to optimize HDD management. Includes power supply and remote. 3.5 mm audio jack Camera 3.2 megapixel color camera Audio supported formats MP3, AAC(AAC, AAC+, AAC-LC), AMR-NB, WAV, MIDI and Windows Media Audio 9 Video supported formats MPEG-4, H.263, H.264 and Windows Media Video 9 Battery Rechargeable Lithium-ion battery 1100 mAh / Talk time - Up to 390 minutes for GSM; Standby time - Up to 340 hours for GSM Expansion Slot microSD memory card Platform Android 1.6 Memory ROM - 512 MB; RAM - 256 MB Dimensions (LxWxT) 106 x 55.2 x 14 mm ( 4.17 x 2.17 x 0.55 inches) 30 Day J&R USA Warranty Coverage only Features may vary based on your chosen GSM service carrier.