Macroreer Netgear AGM732F - 1000Base LX LC, 10 Km, 1310 nm SFP transceiver. 100% Netgear compatible( Sale: $18.99)
Reference Link: http://amzn.to/29RNr7t

Form Factor: SFP 

Port Interface: 1 x 1.25GBase LC 

Interface Details: 1000Base LX 

Data Rate: 1.25 Gbps 

Wavelength: 1310 nm 

Distance: 10 Km (6.2 miles) 

Temperature Range: Commercial 0°C to 70°C 

Digital Diagnostics (DDM): No 

Connection: Single-mode Fiber (SMF) 

Hot Swappable: Yes