HP 64X Black LaserJet Toner Cartridge. Page yield: 24000 pages, Print technology: Laser, Printing colours: Black. Operating temperature range (T-T): 10 - 32.5 °C, Operating relative humidity range: 20 - 80 %, Storage temperature range (T-T): -20 - 40 °C. Package weight: 3.33 kg, Package dimensions (WxDxH): 391 x 193 x 327 mm