The ML-AR04-635-01 from Frankfurt Laser Company is a Laser with Wavelength 634 nm, Power 0.001 to 0.003 W, Output Power (CW) 0.001 to 0.003 W, Operating Temperature 5 to 50 Degree C, Storage Temperature 20 to 70 Degree C. More details for ML-AR04-635-01 can be seen below.