Seventy-two hours is enough to take a watch off on Friday evening and find it still ticking on Monday. The Longines Flagship L4.984.3.21.7 delivers that with its L888 automatic caliber and a silicon balance spring, wrapped in a 40 mm two-tone case with a white Roman-numeral dial.

This is the current generation of a line Longines has made since the late 1950s, and the 40 mm size gives the classic Flagship look a little more wrist presence. Painted Roman numerals and a matte white dial nod to tradition, while yellow-gold PVD on the bezel and bracelet links adds warmth. The silicon hairspring is a modern upgrade, resisting magnetic fields and helping the watch keep steady time.

The movement beats at 25,200 vibrations per hour and is visible through the transparent caseback. Gold-tone hands, a date window and a folding clasp round out a watch that is equally at home at a wedding, a board meeting or a Sunday lunch.

Flagship 40 mm Two-Tone, L4.984.3.21.7

• Case: stainless steel with yellow-gold PVD bezel, 40 mm
• Dial: matte white with painted Roman numerals and date
• Movement: Longines L888 automatic with silicon balance spring
• Power reserve: up to 72 hours, 25,200 vph
• Crystal: sapphire with anti-reflective coating
• Caseback: transparent
• Water resistance: 30 meters
• Bracelet: two-tone steel and yellow-gold PVD, 21 mm lug width, folding clasp

Old-school looks, new-school endurance, and a size that suits modern taste.