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Longines Master Collection Chrono Monopusher 41mm Mens Watch Ivory Dial
Ref. L29604782
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Stepping up in Longines's range
The monopusher chronograph is the format doctors once wore to time a patient's pulse against the pulsometer scale on the dial — thirty beats counted, the scale read, the result given in beats per minute without arithmetic. Longines has been making watches of this type for the better part of a century, and the L799.5 that drives this one is a column-wheel movement developed with ETA, bringing genuine high-watchmaking chronograph architecture — column wheel, single-pusher control — to a manual-wind calibre with a 68-hour reserve. The caseback opens onto the movement unobstructed by a rotor, which is one of the quieter arguments for winding by hand. At 41mm the footprint is modern, but 12.6mm across the case is notably restrained for a mechanical chronograph of this complication, and 94 grams on the wrist is lighter than the proportions suggest. The ivory barleycorn guilloché dial, with its rose-gold-toned Arabic numerals and the outer pulsation track, reads as period-correct without being a costume — the texture catches raking light in a way a plain dial does not, and the warm tones of the ivory sit easily against the brown alligator strap. The clasp adjusts in fine increments rather than fixed holes, which on a strap worn against skin through the day matters more than it sounds.
- Reference
- L29604782
- Brand
- Longines
- Collection
- Master Collection
- Case size
- 41mm
- Case thickness
- 12.60mm
- Lug width
- 21mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Ivory
- Crystal
- Sapphire
- Movement
- Manual
- Calibre
- L799.5
- Functions
- Chronograph, Small seconds
- Water resistance
- 30m
- Bracelet / strap
- Leather strap
- Strap colour
- Brown
- Clasp
- Folding clasp
- Lume
- Luminous
- Retailer
- Goldsmiths
Additional specifications
- Lug-to-lug
- 48.60mm
- Power reserve
- 68 hours
Learn more about Longines
Auguste Agassiz began trading watches in Saint-Imier in 1832, but the modern company dates from 1860, when his nephew Ernest Francillon built a factory in the meadows beside the Suze — the longines of the local dialect — and consolidated the scattered outworkers of the region under one roof.
Longines registered its winged hourglass in 1889. It is the oldest watch trademark still in continuous use.
The company's identity was built on precision and on timing things in public. It supplied chronographs for the first modern Olympic events it timed in 1896, timed the 1912 Federal Gymnastics Festival with a broken-wire mechanism accurate to a hundredth of a second, and developed the photo-finish camera and the quartz timing devices used across twentieth-century athletics.
Its aviation associations are equally deep. Longines instruments were carried by Charles Lindbergh across the Atlantic in 1927, and the Hour Angle watch, designed to Lindbergh's own specification to simplify longitude calculation, remains in the catalogue. Amelia Earhart and Howard Hughes both navigated by Longines.
The house was among the most decorated at nineteenth-century observatory trials, holding numerous precision records. Since joining the Swatch Group in 1983 it has occupied the accessible-heritage position: exclusive ETA-based movements, archive-driven designs through the Heritage line, and volume that makes it one of the group's most important brands.
- 1860
- Ernest Francillon builds the factory at Les Longines.
- 1889
- The winged hourglass is registered — the oldest watch trademark in use.
- 1912
- Broken-wire timing achieves hundredth-second accuracy.
- 1927
- Lindbergh crosses the Atlantic with Longines instruments.
- 1983
- Becomes part of the Swatch Group.
Manufacturer’s guarantee
What the specifications mean
Strengths
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
Worth knowing
- 30m means keeping it away from water
Compare alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | L29604782 |  H76409140 |  R32193018 |
|---|---|---|---|
| Price | £3,350 | £2,050 | £2,120 |
| Case size | 41mm | 40mm | 39mm |
| Water resistance | 30m | 100m | 100m |
| Movement | Manual | Manual | Manual |
| Strap | Leather strap | Mesh bracelet | Leather strap |
| Power reserve | 68 hours | 60 hours | 80 hours |
| This watch |
|
|
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
No. At 30m it will survive rain and handwashing, but not submersion of any kind.
Will the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Does it need a battery?
No. It is hand-wound, so it needs winding every day or two but never a battery.
How long does it run for when it's not worn?
About 68 hours fully wound — enough to sit off the wrist over a weekend and still be running.
What size strap does it take?
21mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.
Will it fit my wrist?
Lug-to-lug is 48.60mm, which suits wrists from roughly 16.5cm (6½ inches) upward.
Lug-to-lug decides fit more than case diameter does.
Is it a men's or women's watch?
Listed as men's.
Cheapest place to buy
Goldsmiths is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.
Who are Goldsmiths?
Goldsmiths has been selling watches in Britain since 1778 and is part of the Watches of Switzerland Group, which is listed on the London Stock Exchange. They are an authorised dealer, so a watch comes with the manufacturer’s own warranty.
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