Posted on: May 17, 2021 Posted by: mysun08481 Comments: 0

Zenith Defy 21 Ultrablue

Zenith fake continues to use color technology and now launches a bold blue version of the sports chronograph.

In the past few years, Zenith has been exploring texture and color, mainly in the modern and bold chronographs of its Defy series. When you think of the military green, black and white or even the super professional Pantone version, you can hardly accuse the brand as a conservative brand. After last year’s UV version, Zenith brought another spectral color: dark blue. This is Zenith Defy 21 Ultrablue.

Like the Ultraviolet version, the new Ultrablue also focuses on this color, which appears on the movement, dial and bracelet. The rest of the watch is deliberately as neutral as possible so as not to interfere with the appeal of the bright metallic blue. The silent case retains its outline and shape and relatively large proportions, with a diameter of 44 mm and a height of 14.50 mm. However, it is made of micro-sprayed titanium, so it produces a darker gray tone and a rough matte surface. As a complement to the blue theme, the integrated rubber strap has a blue Cordura-effect rubber lining and matching stitching.

Zenith Defy 21 Ultrablue is slightly more traditional than the violet version, but not a lot. Zenith Defy 21 Ultrablue uses only blue for its technical components. Indeed, the rest of the luggage, that is, the components used on the dial, all use a matte gray closed chronograph, so it has been streamlined depending on the situation. The markers and hands are rhodium-plated, faceted and coated with Super-LumiNova. The strong blue will only show up under these elements on the bridge of the movement. This contrast between bold colors and soft surfaces and textures is pleasing and gives Zenith an all-in-one luxury sports watch a vision of its own personality.

Although different from other versions of Defy 21, this movement is well known and still impressive. This is the result of extensive work on the iconic El Primero movement, which has undergone major improvements to meet the requirements of the 21st century. The timing part of this automatic chronograph movement is still regulated by the iconic 5Hz (36,000 vibrations per hour) escapement. However, the brand has added a second escapement specifically for the chronograph-when the chronograph button is pressed, the cam lever mechanism meshes with the secondary gear train. The escapement beats at an amazing 50Hz frequency (360,000 vibrations/hour). This movement has a power reserve of 50 hours (when the chronograph is not in use) and has passed the Time Lab certified chronograph. The blue-coated star rotor and tooth bridge are exposed on the back.


Case: 44mm diameter x 14.50mm height – microblasted titanium case – sapphire crystals front and caseback – 100m water-resistant

Dial: special blue openworked dial with matte grey closed chronograph registers – markers and hands rhodium-plated, faceted and coated with Super-LumiNova

Movement: calibre El Primero 9004, in-house – chronometer-certified by TIME LAB – automatic – 32.80mm – 53 jewels – 50h power reserve – dual regulating organ, one for timekeeping (36,000vph or 5Hz), one for the chronograph (360,000vph or 50Hz) – hours, minutes, small seconds, linear power reserve, chronograph with 1-second central hand (measuring the 1/100th of a second), 60-second and 30-minute counters

Strap: blue fabric effect and rubber strap – microblasted titanium double-folding clasp

Reference: 97.9001.9004/81.R946