Empty ink cartridges (without ink),user need to filling ink before using ! Unlimited continuous chip means:the printer will show full ink level for the first installing. If the printer shows ink depleted text on the screen, you should replace the chip ! We also sell replacement chip individual ( ASIN : B08PK1GV7L) Special compatible for SAWGRASS inkjet printer models: Virtuoso SG400NA / EU ; SG800 NA / EU. (Not fake chip for Ricoh GC41 ) Package includes:1Set(4pcs) Empty Refillable Ink Cartridge. 1pc x Black empty refillable ink cartridge with chip 1pc x Cyan empty refillable ink cartridge with chip 1pc x Magenta empty refillable ink cartridge with chip 1pc x Yellow empty refillable ink cartridge with chip