Source: Images and content by Zenith. See the original article here - https://pressroom.zenith-watches.com/2023/02/03/high-frequency-across-the-spectrum-zenith-unveils-ultra-colour-box-set-of-8-chromatically-charged-defy-21-models/
Whether it’s vibrantly colourful dials in the 1970s or groundbreaking movements finished with striking tones in its more recent creations, ZENITH has never shied away from exploring chromatics in new and daring ways.
Through the DEFY 21, the first model to host ZENITH’s groundbreaking El Primero 1/100th of a second chronograph movement, ZENITH sought to express notion of high-frequency precision through frequencies of light and colours. This idea was first brought to life with the DEFY 21 Ultraviolet in 2020, which established a new design code for the DEFY 21 that ZENITH is now fully expressing this concept with the DEFY 21 Ultra Colour box set.
Consisting of eight different iterations of the DEFY 21 and limited to only eight box sets, the Ultra Colour pieces are all crafted in entirely matte finished lightweight titanium, allowing the chromatics from within to shine through. The open dial features raised chronograph counters matching the grey tone of the case, beneath which vibrant metallic colours are applied in the least expected part of the watch: the movement.
Luminous and transparent with an almost crystalline allure, the Ultra Box set is delivered in a transparent acrylic presentation case, with an iridescent effect that refracts light to display different colours depending on the angle of the light. Each of the watches is engraved on the case back with a limited edition number out of 8, and each box set will feature watches that are sequentially numbered 1 through 8, rather than having the same number for all eight watches in a single box set.