CWDM-SFP-1570= The benefits of Optical Transceivers from Xgiga include: l Reliable: one week Replacement and 3 years free Warrantyl Professional: dust-free workshop, experienced engineers l Effective: 100% compatibility guaranteedl Affordable: Best price all over the worldl Capable: Manufactured to exact OEM specificationsl Available: Wide range brand compatible product in large stock and guaranteed short time deliveryl Support: Engineer Consultation and technical support