Finisar FTLF3436W4BTxx is 25G CWDM 10KM SFP+, which are FTLF3436W4BT27 FTLF3436W4BT29 FTLF3436W4BT31 FTLF3436W4BT33 ,with 1 year warranty. Check datasheet, price and details on www.opticalmodulemanufacturers.com.
This product is a 10Gb/s XFP DWDM transceiver module,which is 10GBASE 40KM DWDM XFP. Finisar FTLX6624MCC transceiver has a maximum reach of 40km at 10.5 Gb/s data rate.