For a high quality cartridge that goes longer before replacement, choose a genuine OKI Black Extra High Yield Toner Cartridge (01279201) for your OKI B710/B720/B730 laser printer. When you see a Toner Low message on your printer's LCD display, you can print around 100 more pages before the cartridge is exhausted. Make sure to order a new cartridge and replace it as soon as possible. This extra high capacity cartridge is packed with even more toner, giving an amazing yield of up to 25,000 pages.