Dell 15" E153FPf LCD Monitor (Charcoal Gray) Dell 15-inch TFT LCD Flat Panel Monitor General Features: Charcoal gray color Active-matrix TFT LCD 15-inch viewable image 1024 x 768 optimal resolution Horizontal scan range: 30 kHz to 63 kHz (auto)Vertical scan range: 56 Hz to 76 Hz (auto) 0.297 mm pixel pitch 400:1 contrast ratio 250 cd/m birghtness 100 (V)/120 (H) viewing angles 25 ms response time