The Basics
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.
| Brand: | Longines |
| Family: | GrandeVitesse |
| Reference: | L3.637.4.70.6 (aka: L36374706) |
| Name: | GrandeVitesse Chronograph 24h |
| Produced: | 2009 – 2011 |
| Limited: | No |
Below is a detailed look at Longines’s model L3.637.4.70.6 from GrandeVitesse watch family, including the price, case details and movement features.
The Details
Longines’s GrandeVitesse Chronograph 24h (L3.637.4.70.6 (aka: L36374706)) was originally released in 2009 – 2011. This watch features a automatic movement beating at a frequency of 28800 bph ( 4 Hz) to provide a 42-hour power reserve when fully wound.
The Case
The stainless steel case measures 44mm in diameter and roughly mm thick, with 22mm lug width. The round case is paired with a silver color dial with stick-shaped hands, and a stick / dot hour markers and minute track, covered by a sapphire glass. Longines’s GrandeVitesse model L3.637.4.70.6 is water resistant up to 50 meters (164 ft). A display caseback is over the back of the watch case.
| Material: | Stainless steel |
| Glass: | Sapphire |
| Back: | Display |
| Shape: | Round |
| Diameter: | 44mm |
| Height: | mm |
| Lug Width: | 22mm |
| W/R: | 50 |
Case Diameter
Case Thickness
Lug Width
Water Resistance
The Movement
The GrandeVitesse L3.637.4.70.6 movement is a powered by caliber L686 made by Longines. The 25-jewel automatic movement is 30mm in diameter. Its balance wheel oscillates at 28,800 semi-oscillations per hour or 4 Hz. This movement offers a 42-hour power reserve.
| Type: | Automatic |
| Brand: | Longines |
| Caliber: | L686 |
| Base: | ETA 7754 |
| Display: | Analog |
| Diameter: | 30mm |
| Jewels: | 25 |
| Reserve: | 42 hours |
| Frequency: | 28800 bph |
| Time: | Additional 24 Hour Hand (adjustable), Hours, Minutes, Small Seconds |
| Chronograph: | Chronograph |
| Additionals: |
The Price
How much does the Longines’s GrandeVitesse L3.637.4.70.6 cost? This watch was introduced in 2009 and has been in Longines’s collection for around . This watch is not a limited release. As with most luxury watches, the price of depends on the availability and demand.
CURRENT PRICE: $2,270
For more information, visit Longines online.
Specifications:
- Brand: Longines
- Model: GrandeVitesse Chronograph 24h
- Reference Number: L3.637.4.70.6 (aka: L36374706)
- Limited: No
Case & Dial:
- Material: Stainless steel
- Glass: Sapphire
- Back: Display
- Diameter: 44
- Thickness:
- Lug Width: 22
- Dial Color: Silver
- Indexes: Stick / Dot and Stick-shaped hands
- Water Resistance: 50 meters
Movement:
- Winding: Automatic
- Brand: Longines
- Caliber: L686
- Display: Analog
- Diameter: 30mm
- Jewels: 25
- Power Reserve: 42 hours
- Frequency: 28800 bph
- Functions: Additional 24 Hour Hand (adjustable), Hours, Minutes, Small Seconds
About Longines
Augueste Agassiz founded Longines in 1832 in Saint-Imier, Switzerland. Now owned by the Swatch Group, the manufacture is best known for its aviator watches. Its Heritage Collection includes the Telemeter Chronograph, Heritage Retrograde, Column-Wheel Chronograph, and Heritage 1935. Longines is part of the Swatch Group group.
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