The QSFP-100G-LR4 from 3Coptics is a Fiber Optic Transceiver with Data Rate 100 Gb/s, Wavelength 1294 to 1310 nm (LWDM (DFB), Distance/Reach 10 km, Output Power -4.3 to 4.5 dBm, Receiver Sensitivity -10.6 dBm. More details for QSFP-100G-LR4 can be seen below.