The Doppler Effect design is inspired by the Doppler effect, as its name suggests. This is the change in wavelength of waves from a moving source. The waves compress in front and stretch behind. For light, this creates a blueshift in front and a redshift behind. The design has an experimental laboratory vibe.

The "Chromatic" version is a variant of the Double version, displaying the full chromatic spectrum from ultraviolet at the front to infrared at the back. This version is very rich in colors.

The skin has been completely redesigned.
- The skin is now PBR-validated, meeting Valve's requirements.
- Changed the wavy material from metallic to a glossy plastic or polyurethane finish.
- The base material remains metallic.
- Removed hand-painted text and symbols for a cleaner design.
- Added handwritten scientific elements in the alpha channel, visible as the skin wears.
- Included the "WAVY" logo along with additional details (e.g., Delta Technology, caution markings).
- Enhanced overall detail across the design.