Huntsman Knife | Doppler Phase 4 (Huntsman P4) was added to the game on March 15, 2017, alongside the "Take a trip to the Canals" update. The skin is available in cases "Spectrum" and "Spectrum 2".
The blade of the knife is painted with metallic paints and adorned with a pattern of translucent wavy lines resembling smoke. The color scheme of the skin uses various shades of blue, brown and black creating gradient transitions. The handle remains unpainted.
Float Value of the skin ranges from 0.00 to 0.08, which makes Huntsman Knife | Doppler Phase 4 available only in Factory New and Minimal Wear condition. Small abrasions are already present on the spine and along the cutting edge in Factory New condition. At levels of wear close to the maximum, the number and size of abrasions increase.
The pattern index affects the ratio of colors as well as the location of blue, brown and black areas. Pattern variations with a predominance of blue on the play side of the blade are titled “BTA Blue”. Knives with only blue color on the blade resemble Huntsman Knife | Doppler Sapphire and are titled “Max Blue”.
Due to a relatively low price, Huntsman Knife | Doppler Phase 4 became one of the most popular and common skins in the “Doppler” series.