The HP 31 Original Cyan Ink Bottle delivers efficient, low cost printing with no compromise to quality. Compatible with the HP Ink Tank and HP Smart Tank wireless series, the Ink Bottle offers a super high yield of up to 8000 pages. You can easily check how much ink is left in your bottle, and replenish it at any time. Compatible printers include HP Smart Tank 400 series, HP Smart Tank 500 series, HP Smart Tank 600 series, HP Smart Tank Wireless 450, HP Smart Tank Wireless 455, and HP Smart Tank Wireless 457. Pack contains one 70ml Cyan ink bottle.