★ Bayonet | Doppler Phase 4 (Factory New)

The ★ Bayonet | Doppler Phase 4 (Factory New, FN) is a Covert ★ knife finish, a mostly blue marbled coat over black that shifts across each copy. Factory New covers the 0.00–0.07 band of the float scale, the cleanest grade available, and here that blue reads at its most saturated. Most players just call it the bayonet doppler phase 4 — or simply the bayonet phase 4.

Design

Doppler skips graphics entirely for an anodized coat marbled in a mineral-inspired swirl, and this copy lands in Phase 4 — a mostly blue marbled finish over black. It carries the flavor line "Getting lost in its color can prove fatal."

★ Bayonet | Doppler Phase 4 (Factory New) Float and Wear

Doppler is float-capped between 0.00 and 0.08, so only Factory New and Minimal Wear (MW) ever exist — this finish never wears past a near-mint look no matter the copy. At Factory New the blade sits at the lowest end of that range, keeping the blue marbling crisp and easy to read. On the float scale, Factory New spans 0.00–0.07.

Bayonet | Doppler Phase 4 Rarity

Rarity: Covert ★ — not a standard Covert skin but the gold-tier rare special, the "knife" slot sitting above every ordinary weapon grade in a case. Landing one at all is the scarce part, before the phase is even revealed.

Bayonet | Doppler Phase 4 Case and Collection

Doppler phases come from a specific, smaller set of cases rather than one collection — the Chroma Case, Chroma 2 Case, and Chroma 3 Case all carry this finish. The rare-special ("knife") tier overall lands at roughly 0.26% per case opening, so most buyers pick a phase up on the market instead of chasing it from a box.

Bayonet Doppler Phases

Doppler splits into several phases, and this copy is locked into Phase 4 for good. The three gem phases — Ruby (red), Sapphire (blue), and Black Pearl (iridescent) — sit well above the numbered phases in price; among the numbered set, buyers favor the most saturated looks, with Phase 2's pink and this Phase 4's blue leading that pack. Whichever phase you get is fixed the moment the skin is generated and never shifts with wear.

StatTrak & Souvenir

This knife comes as a regular knife and a StatTrak version, which adds a permanent kill counter that carries through any trade or sale. There is no Souvenir version — knives are never part of Major-tournament souvenir packages, regardless of the phase or case it came from.

Bayonet | Doppler Phase 4 Price

Factory New sits ahead of Minimal Wear on this phase's own price ladder, and Doppler as a whole is a high-end pick among this knife's finishes, priced in a thin market alongside the Bayonet's rarer options. It's available to buy on Skin.Land with instant delivery and no hidden fees. Prices for the phase 4 bayonet track the exterior, the float and whether the copy carries StatTrak™, so check the live number on this page.

FAQ

What case is the Bayonet Doppler Phase 4 in?

It drops from the Chroma line of cases — the Chroma Case, Chroma 2 Case, and Chroma 3 Case all carry Doppler bayonets. Since the phase is randomized on drop, most buyers who want Phase 4 specifically pick one up on the market rather than opening for it.

Which Doppler phase is best on the Bayonet?

The three gem phases — Ruby, Sapphire, and Black Pearl — sit well above the numbered phases in price and demand. Among the numbered Phase 1-4 set, the most saturated looks get the most attention, and this Phase 4's deep blue is one of the favorites. Whatever phase you land is fixed for the copy's whole life.

What are the best gloves for the Bayonet | Doppler Phase 4?

Since this phase runs mostly blue and black, blue-toned or dark gloves — think Hydra or a navy driver style — pull the loadout together without fighting the blade's marbling. Blue gloves in particular echo the finish directly. For the best Bayonet Doppler Phase 4 glove combo, keep the palette cool rather than pairing it with warm oranges or reds.