Brand Name: Nokia Model Numbers: FORX 473757.101 FORW 473756A.101 Form Type:SFP+ Speed:9.8GBase Reach:20km Wavelength:1270nm/1330nm Connector:LC Media:SMF Environment: -40 to 85C Country of origin: China In addition to Nokia FORX 473757.101 FORW 473756A.101 , Liyuan Tech supply a wide range of other Nokia series transceivers. If you have any need or interest, please feel free to send inquiry to global@chn-liyuan.com