Put the silver-and-blue Conquest Chronograph on a blue rubber strap and it turns into a weekend sports watch. The Longines L3.835.4.98.9 keeps the matte silver dial, blue counters and blue ceramic tachymeter bezel of its bracelet sibling, but the rubber makes it lighter and more comfortable, especially in warm weather.

This 2024 chronograph is driven by the Longines L898.5 automatic: 28,800 vph, a silicon balance spring and about 59 hours of reserve, visible through a sapphire caseback. The rubber strap closes with a double-security folding clasp that has a micro-adjustment, so you can fine-tune the fit when your wrist swells in the heat. With a screw-in crown and 100 meters of water resistance, it handles poolside days easily.

The strap also changes the character of the 42mm, 14.3mm case. On rubber the watch sits tighter to the wrist and feels sportier, while the silver dial keeps it from looking like a pure tool watch.

Longines Conquest Chronograph on blue rubber: L3.835.4.98.9

• 42mm stainless steel case, 14.3mm thick
• Silver matte dial, blue chronograph counters, Super-LumiNova
• Ceramic tachymeter bezel insert in blue
• L898.5 automatic chronograph, 28,800 vph, approx. 59 hours
• Sapphire crystal and sapphire display caseback
• Water resistance: 10 bar (100m)
• Blue rubber strap, folding clasp with micro-adjustment, 22mm lugs

A chronograph built for sun and sport, still sharp enough for dinner afterward.