General presentation of the Longines Ultra-Chron Classic 37mm
The Longines Ultra-Chron Classic 37mm belongs to the brand’s high-frequency watch tradition. Its more compact 37 mm format offers ideal wearing comfort while preserving the distinctive aesthetic and technical signature of the Ultra-Chron collection.
Design and features
The 37 mm stainless-steel case houses a silver-toned dial with a “sun” finish, adorned with applied indices and polished rhodium-plated hands. The sapphire crystal, treated with anti-reflective coating on both faces, ensures clear, long-lasting readability.
Two variants are available :
Black alligator leather strap with pin buckle.
Stainless-steel bracelet with double-safety folding clasp and a micro-adjustment system.
Movement and performance
Powered by the Longines automatic caliber L836.6, this watch beats at 36,000 vibrations per hour, delivering remarkable accuracy. Its single-crystal silicon balance spring enhances stability and resistance to magnetic fields. The power reserve reaches 52 hours.
Technical details
- References : L2.537.4.72.2 (leather) / L2.537.4.72.6 (steel)
- Movement type : Automatic mechanical (Caliber L836.6)
- Case : Stainless steel, round
- Diameter : 37.00 mm
- Thickness : 10.95 mm
- Lug width : 19 mm
- Water resistance : 5 bar (50 m)
- Crystal : Double-sided sapphire anti-reflective coating
- Dial : Silver-toned “sun”
- Indices : Applied
- Hands : Polished rhodium-plated
- Functions : Hours, minutes, seconds, date
- Power reserve : 52 hours
- Weight : 59 g (leather) / 122 g (steel)
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