Longines Spirit: Aviation Heritage Revived

The Longines Spirit collection is the brand's most direct engagement with its aviation timing history — a lineage that runs from the 1927 Charles Lindbergh transatlantic timing to the 1931 Hour Angle Watch collaboration and the 1934 first flyback chronograph function. Launched in June 2020, the Spirit family has expanded to include a base three-hand, a Zulu Time GMT referencing the 1925 dual-timezone watch, a flyback chronograph, and a dedicated pilot model. All Spirit automatics carry COSC chronometer certification — a distinction that positions the line at the technical upper end of the Longines range.

Launch — June 2020

The Spirit collection was announced in June 2020 as a new pillar of the Longines catalogue — sitting alongside the Conquest (sport), HydroConquest (dive), Master Collection (complications), and DolceVita (dress). Its design reference point was the instrument watch: bold Arabic numerals, high-contrast dials, robust crowns, and legibility-first layouts that draw on the field and cockpit watches Longines supplied to aviators and explorers during the mid-twentieth century.

The launch references were offered in 40mm and 42mm , in steel with a range of dial colours including blue, black, and cream. Water resistance is rated to 100 metres — adequate for daily use but not a dive specification. The Spirit is positioned as an active field and travel watch, not a water tool.

Calibre L888.4 — COSC Certified

All Spirit three-hand automatics use the L888.4 calibre :

Longines has enhanced the L888.4's power reserve to 72 hours , up from the 64-hour figure quoted at the Spirit's 2020 launch — a meaningful improvement that lets the watch sit unworn over a long weekend and still be running. Current Spirit, Spirit Pilot and Record references all carry the 72-hour rating.

The COSC certification requires 16 days of testing across five positions and three temperatures, with accuracy within ±4 seconds per day . The L888.4 is the only variant in the L888 family that carries COSC certification as standard across all Spirit production — distinguishing the Spirit from other Longines lines that use the non-COSC L888.5 or L888.6.

The silicon balance spring provides resistance to magnetism and corrosion, and maintains consistent elasticity across temperature variation — properties relevant to a watch intended for travel and outdoor use.

Spirit Zulu Time — 2022

The Spirit Zulu Time , introduced in 2022 , is a GMT watch referencing the 1925 Longines Zulu Time — cited as the first dual-time-zone wristwatch produced commercially.

The Spirit Zulu Time uses the L844.4 calibre — a GMT movement, also COSC-certified. The Zulu designation refers to the NATO phonetic alphabet letter for Z, which designates Greenwich Mean Time (UTC+0) in aviation and military time notation. A pilot or traveller using a Zulu Time watch reads local time on the main hands and UTC/GMT on the central GMT hand against the 24-hour bezel scale.

The case is available in 39mm and 42mm, with a 24-hour graduated bezel. The reference to the 1925 dual-timezone watch is historically documented — Longines produced that watch for aviators navigating by time difference calculation — and the Spirit Zulu Time's function is identical in principle, though the calibre has been entirely modernised.

Spirit Flyback — 2023

The Spirit Flyback , introduced in 2023 , uses the L791.4 calibre :

The flyback function — allowing the chronograph seconds hand to return to zero and restart in a single push, without the stop–reset–start sequence — is the complication that Longines first produced in 1934 and commercialised in the Calibre 13ZN of 1936 . The Spirit Flyback is, in this sense, the contemporary expression of Longines' most historically significant chronograph achievement.

The L791.4 is a modified ETA 7753 with a column wheel controlling the chronograph mechanism — a higher-quality architecture than a cam-and-lever system. At 28,800 vph , the chronograph sweep is smooth rather than stepped. The 42mm case and aviation-inspired dial make the Flyback the most instrument-like member of the Spirit family. Price: approximately USD $4,500 and above .

Spirit Pilot & Spirit Pilot Flyback — from 2025

In 2025 Longines split off a more overtly aviation-themed, more compact sub-line: the Spirit Pilot and the Spirit Pilot Flyback . Both lean harder into cockpit conventions than the base Spirit — Arabic numerals at every hour, high-contrast dials, and a genuinely wearable sub-40mm footprint — while retaining the collection's COSC certification and silicon balance springs.

Spirit Pilot (three-hand). A 39mm × 11.5mm steel watch (47.4mm lug-to-lug, 100m water resistance) driven by the automatic L888.4 (COSC, 72h) . Applied numerals and hands with Super-LumiNova, a railroad minute track, no date — it is the entry point of the range.

Spirit Pilot Flyback (chronograph). A 39.5mm × 13.4mm chronograph with a bidirectional rotating bezel (ceramic insert), box sapphire crystal and a clean two-register, no-date dial. Crucially, it uses a different movement from the earlier Spirit Flyback: the hand-wound Calibre L792.4 , a Longines-exclusive column-wheel flyback built on the Valjoux 7750 base and fitted with a silicon balance spring — 28,800 vph, 68-hour reserve, 23 jewels, COSC. (By contrast the 2023 Spirit Flyback uses the self-winding L791.4 on an ETA 7753 base — the two are easy to confuse.)

2026 — blue dials. Longines expanded the Pilot line with four sky-blue references: two Spirit Pilots and two Spirit Pilot Flybacks, each on a steel bracelet or blue rubber strap (the Flyback gaining a blue ceramic bezel). Approximate pricing: Spirit Pilot ~€2,950 (bracelet) / €2,600 (rubber); Spirit Pilot Flyback ~€5,400 / €5,050 — making the Flyback one of the most accessible Swiss column-wheel flyback chronographs on the market. See our news coverage: Longines Spirit Pilot & Spirit Pilot Flyback in Blue (2026).

Frequently Asked Questions

When was the Longines Spirit launched?
June 2020, as Longines' aviation heritage collection.

Are all Spirit watches COSC-certified?
All Spirit automatic three-hand models use the L888.4, which is COSC-certified. The Spirit Flyback uses the L791.4, also COSC-certified. The Spirit Zulu Time uses the L844.4, also COSC-certified.

What is the Spirit Zulu Time?
A GMT watch referencing the 1925 Longines Zulu Time — the first dual-timezone wristwatch. The name "Zulu" refers to the NATO phonetic designation for UTC+0 (Greenwich Mean Time).

What is the flyback function?
The flyback allows the chronograph seconds hand to return to zero and restart in a single push, rather than the standard stop–reset–start sequence. Longines first produced a flyback in 1934 and commercialised it in the Calibre 13ZN of 1936.

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