Swiss brand Angelus has added a 5-day power reserve to its diving tourbillon movement.
While meeting all the criteria for a diver’s watch, the U51 Diver Tourbillon’s movement, the A-310 caliber, has a silicon lever escapement with all bridges as plates made of titanium, while the tourbillon cage is set on a ball bearing instead of pivots to gain in stability.
Even though the U51 Diver Tourbillon is intended as a high-performance sports watch, the skeletonized movement has been carefully decorated with sandblasted finishing, enhancing the natural color variations of the titanium.
The 45mm titanium case features two large screw-down crowns. The two-position crown at 4 o’clock is used for winding and setting the time, while the crown at 2 o’clock is used to rotate the unidirectional 60-minute rotating bezel.
Angelus U51 Diver Tourbillon 5-Day Power Reserve
At the 9 o’clock position there’s a helium escape valve to ensure the watch’s water resistance to 300 meters (1,000 feet), even during saturation diving so the helium molecules cannot make their way into the case under pressure.
The case features a subtle interplay between sandblasted, brushed and polished surfaces, which takes advantage of the titanium’s unique colors properties. The open display reveals a contrasting chapter ring of stormy blue and striking orange colors. The hands, indexes and Arabic numerals are all filled with Super-Luminova for optimal readability.
The U51 Diver Tourbillon comes on a matching blue rubber strap embossed with an Angelus logo and a titanium folding buckle.