The Brother MFC-J3940DW is a multifunctional inkjet printer that offers a range of features:

• Print, copy, scan, and fax in A3: It can print, copy, scan, and fax in A3 size.
• Print speed: Offers print speeds up to 28 ipm for black and white and color.
• Network capabilities: Features built-in Ethernet and wireless connectivity.
• Automatic duplex printing: Supports automatic duplex (two-sided) printing in A3 size.
• Paper capacity: Can handle up to 600 sheets of paper.
• Touchscreen: Comes with a 3.5" TFT Color touchscreen for easy operation.
• High ink yield: Uses high-yield ink cartridges that offer up to 3,000 pages for black and 1,500 pages for color.

Overall, the Brother MFC-J3940DW is ideal for small businesses and workgroups that require a multifunctional printer with high performance and versatile capabilities.