★ Butterfly Knife | Doppler Phase 1 (Factory New) is one of the most striking blades from the Spectrum Case series, introduced in 2017. This knife features the iconic balisong design, prized for its unique flip animations and fluid handling in-game. The Doppler Phase 1 finish coats the blade in a mesmerizing swirl of deep midnight blue, crimson red, and subtle purple gradients, giving it a cosmic, almost molten appearance. Its sleek black handle is accented with bold red inserts, completing a deadly yet elegant aesthetic. The Doppler series uses a Patina style finish, meaning each knife has a slightly unique distribution of colors and blends. In Factory New condition, the blade looks pristine—no scratches, scuffs, or edge wear—so the rich Doppler hues shine vividly under any lighting.