"The Brother MFC J6945DW investment Tank color inkjet all in one printer with tank technology delivers reliable performance, enhanced productivity and professional results ideal for small businesses and home offices. The MFCJ6945DW features high capacity cartridges and an internal ink storage tank delivering uninterrupted printing for up to 1 year(1) without buying ink. With investment Tank, there's no sweating over running out of ink just the features, convenience and affordability you need. brother investment Tank all in ones use familiar cartridges that hold more ink to help minimize cartridge Replacement. Investment Tank all in ones use the Brother intelligent page Gauge) that monitors the amount of ink used and the amount remaining to help eliminate running out of ink in the middle of an important Print job. Remaining page counts are displayed so you can print with confidence and without interruption. (1)based on average monthly print volumes of approximately 300 pages at 60 percent black pages/ 40 percent color pages in accordance with ISO/IEC 24711 using 4 cartridges provided in box. (Requires connection to a wireless network. (3)Page gauge is an estimate for informational purposes only. (Require an Internet connection and an account with desired service. (Approximate page yields in accordance with ISO/IEC 24711. (6)Based on average monthly print volumes of approximately 300 pages at 60 percent black pages/ 40 percent color pages in accordance with ISO/IEC 24711 using 8 cartridges provided in box. (7)Based on ISO/IEC 24734 (After first set of ISO test pages). (8)The mobile device must have NFC capability and run Android OS 4. 4 or later. (8)Based on ISO/IEC 24734 (After first set of ISO test pages). "Operating Environment: Temperature : 50 95° F.