This economical high-power 635nm module has optional TTL modulation. Beam pattern has small wings with a little scatter, typical of this type of diode (see photo).
Wavelength: 638nm red-orange
Optical Output: 500mW
Beam Profile: adjustable focus dot
Soft Start: 2sec.
Supply Voltage: 12V 500mA
Dimensions (Laser Head): 36 x 36 x 60mm
Latest version has adjustable focus.
Note: photo shows old TTL driver, latest driver has case.