Model - Seagate Skyhawk ST4000VX000-520, Type - SATA Surveillance HDD, Storage (GB/TB) - 4TB, Form Factor (Inch) - 3.5 Inch, Interface - SATA 6Gb/s, RPM - 5900RPM, Buffer (MB) - 64MB, Transfer Rate (MB/s) - 180MB/s, Power Consumption - 5.6 W, Dimension - 147 x 101 x 26mm, Weight - 610 gm, Others - Tarnish Resistant: Yes, Load/Unload Cycles: 300,000, MTBF (Hours): 1,000,000 hr, Dimension: 101.6 x 26.11 x 146.99mm, Weight: 610gm, Specialty - The industrys first surveillance-optimized hard drive platform with capacities up to 4TB improves video streaming, drive performance and data integrity in surveillance applications. The Surveillance HDD supports higher-resolution cameras. Reliably performs in multi-drive systems with RAID support from RV sensors. Low power consumption options support always-on surveillance systems. Never miss a frame with quick time-to-ready.Best-Fit Applications: NVR, Embedded SDVR, Hybrid SDVR, Surveillance DVR., Part No - ST4000VX000-520, Warranty - 3 year