Reference
Longines GrandeVitesse Chronograph 24h L3.637.4.70.6
The Longines GrandeVitesse Chronograph GMT has a stainless steel case of 44mm, fitted with an aluminum tachymeter bezel calibrated for both KM/H and MPH. This watch is powered by caliber L686, which is Longines' version of the ETA / Valjoux 7754.
| Reference | L3.637.4.70.6 |
|---|---|
| Collection | GrandeVitesse |
| Case diameter | 44 mm |
| Case material | Stainless Steel |
| Bezel | Tachymeter |
| Case shape | Round |
| Case back | Open |
| Lug width | 22.00 mm mm |
| Movement | Longines caliber L686Additional |
| Water resistance | 50 m |
| Dial colour | Silver |
| Indexes | Stick / Dot |
| Hands | Stick |
| Crystal | Sapphire |
| Year introduced | 2009 |
| Limited edition | Yes |
This is a reference-catalog entry for the Longines GrandeVitesse Chronograph 24h L3.637.4.70.6. WatchFlow's Watch Library lets a dealer attach a reference like this to a piece of stock in one click, so the brand, reference and specs are filled in automatically instead of retyped — then that record drives listings, invoices and reports. See how it fits the wider watch inventory management workflow.
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