HP 780 500-ml Cyan Ink Cartridge. Operating relative humidity range: 30 - 70 %, Storage temperature range (T-T): 5 - 35 °C, Operating temperature range (T-T): 15 - 30 °C. Package weight: 1.4 kg, Weight: 1.1 kg, Package dimensions (WxDxH): 180 x 380 x 80 mm