The product is a set of 4 SFP28 single mode fiber module network transceivers, specifically designed for 25G networks with a transmission distance of 10km. Each module is compact and lightweight, measuring 5.94x5.67x1.22 inches and weighing 0.37 pounds. These modules are ideal for use in enterprise networking setups, providing high-speed data transmission over long distances with a reliable connection. Perfect for servers and networking equipment, these transceivers offer efficient and secure data transfer for various networking applications.