The product is an alternative, not an original

Compatible with the following printers: Brother DCP-L 2510D, 2530DW, 2537DW, 2550DN; Brother HL-L 2310D, 2350DW, 2357DW, 2370DN, 2372DN, 2375DW; Brother MFC-L 2710DN, 2710DW, 2712DN, 2712DW, 2730DW, 2732DW, 2735DW, 2750DW, and all devices that use TN-2410 or TN-2420 cartridges according to the user manual.
Alternative toner for: Brother TN-2420, TN2420, TN-2410, TN2410
Cartridge capacity: black – approximately 6000 pages (DIN A4, 5% coverage)
100% compatible with the toner level indicator