Single watch with a box, Hublot, model: 521.NX.7170.LR, diameter: 45mm, case material: brushed matte titanium, lightweight and not prone to allergies, movement: HUB1143 automatic chronograph movement, power reserve: 42 hours, business minimalist blue dial, sunburst radiating blue dial, bar luminous hour markers, no redundant skeletonized, style restrained and stable, different from the sporty and flamboyant feel of Big Bang; Timing layout: 30-minute counter at 9 o 'clock, small seconds counter at 3 o 'clock, date window at 6 o 'clock. Simple time reading. The iconic ultra-thin case, a classic fusion, is from Hublot's Ultra-thin series. With a case thickness of only 11.4mm, it can be easily tucked into the cuffs of a formal shirt. The six H-shaped hexagonal screws on the bezel are the brand identification symbols.