Longines GrandeVitesse Chronograph 24h Ref. L3.637.4.70.6

The Longines GrandeVitesse Chronograph 24h L3.637.4.70.6 has a 44 mm stainless steel case, and is water resistant to 50 metres.

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.

Diameter: 44 mm
Water resistance: 50 m
Case: Stainless Steel
Released: 2009
Movement: Longines caliber L686

Specifications

Case and dimensions

Case diameter: 44 mm
Lug width: 22 mm
Case shape: Round
Case material: Stainless Steel
Bezel: Tachymeter
Crystal: Sapphire
Case back: Open
Water resistance: 50 m

Dial

Dial colour: Silver
Indexes: Stick / Dot
Hands: Stick

Movement

Calibre: Longines caliber L686
Movement maker: Longines
Movement type: Automatic
Display: Analog
Power reserve: 42 h
Frequency: 28800 vph
Jewels: 25
Movement diameter: 30 mm
Complications: Additional 24 Hour Hand (adjustable), Chronograph, Date, Hours, Minutes and Small Seconds