The Hourstriker Verdict
UNIMATIC teams up with designer Nigel Cabourn and the Armoury for their newest release. The Modello Cinque UT5-TANC is offered in two Cerakote stonewashed cases, one in teen and one in navy blue. These compact 36mm cases house a reliable and accurate Seiko VH31A quartz caliber with 2 years of power reserve. These are extremely unique pieces and I applaud Unimatic for using different colors on their cases.
— Peter, Editor-in-Chief
Italian watchmaker UNIMATIC has expanded its utilitarian portfolio through a tripartite collaboration with British designer Nigel Cabourn and menswear retailer The Armoury, resulting in the Modello Cinque UT5-TANC. This release serves as a direct mechanical descendant of the 2019 Modello Due U2-NC, which originally drew its structural inspiration from the Commonwealth Trans-Antarctic Expedition of the late nineteen fifties. Utilizing the compact 36-millimeter Modello Cinque architecture, the new references prioritize strict field utility over superfluous exterior finishing. Two distinct variants compose this release, the green UT5-TANC-A and the navy blue UT5-TANC-B, both employing specialized industrial coatings to achieve a heavily oxidized, non-reflective surface. Moving away from the larger, blockier cases that defined early UNIMATIC production, this 36-millimeter footprint aligns with historical military specifications where reduced weight and lower profiles were critical for operational efficiency. The project distinctly ignores decorative horology, opting instead for a brutalist, strictly functional aesthetic that addresses the specific requirements of harsh environmental exposure.
Sourcing visual cues from mid-century survival equipment, the overall execution emphasizes legibility and structural rigidity above all other metrics. Collaborations in the modern watch industry often default to simple dial color alterations, but this specific project integrates structural material changes alongside high-visibility modifications dictated by Cabourn's archival military research. The Armoury's involvement brings an additional layer of proportion control, ensuring the rugged specifications do not overwhelm the wrist dynamics of the wearer. By focusing on a quartz-driven, highly shock-resistant platform, the manufacturers have isolated the primary vulnerabilities of traditional mechanical field watches and engineered specific countermeasures. These design choices collectively produce an instrument tailored for physical impact, sustained water exposure, and extreme temperature fluctuations rather than climate-controlled office environments. Historically, expedition watches required thick iron dials to protect against magnetism, but the transition to advanced quartz oscillators negates that specific need, allowing for a thinner overall profile.

Courtesy of UNIMATIC
The Case and Dial
Examining the exterior housing reveals a core constructed entirely from 316L stainless steel, thoroughly enveloped in a Cerakote stonewashed finish. This specific steel alloy features low carbon content and high molybdenum levels, providing an optimal base for preventing pitting corrosion during prolonged exposure to saltwater. Cerakote itself is a specialized polymer-ceramic composite coating heavily utilized in tactical firearms and military hardware for its extreme resistance to abrasion, corrosion, and chemical degradation. The application process on these cases involves a distressed, stonewashed technique, rendering the surface completely matte and giving it a heavily worn, textured appearance right out of the box. The UT5-TANC-A utilizes an olive drab green application, while the UT5-TANC-B relies on a deep navy blue, both absorbing ambient light effectively rather than reflecting it back at the wearer. Measuring exactly 36 millimeters in diameter across the primary cylinder, the case features a substantial 22-millimeter lug width. This geometry provides a remarkably wide, aggressive stance on the wrist, anchoring the watch securely despite the constrained nominal diameter of the main body.
Continuing the external analysis, an oversized eight-millimeter screw-down crown dominates the right flank of the chassis. Engraved deeply with the Alchemical Sun motif, this oversized component guarantees secure operation and threading even when the user is wearing heavy thermal gloves in sub-zero environments. Water resistance is individually certified to a depth of 300 meters, or thirty atmospheres. This rating is secured through exceptionally thick casing walls, heavy-duty synthetic compression gaskets seated in the crown tube, and a 2.2-millimeter thick double-domed sapphire crystal. The crystal is treated with an internal anti-reflective layer, eliminating the dual-surface mirroring effect that often plagues domed glass under direct sunlight. The lack of an external bezel insert further simplifies the exterior architecture, removing a potential failure point where debris or sand could otherwise compromise moving parts.
Transitioning to the dial, the layout strictly adheres to high-contrast military legibility standards dictated by field operation protocols. A flat navy blue base serves as the primary backdrop, populated by clearly printed Arabic numerals coated heavily in Super-LumiNova GL old radium material. This specific luminous compound utilizes a strontium aluminate base to emit a strong, sustained glow in low-light scenarios while presenting a warm, faux-patina coloration during daylight hours. Time indication is achieved via phantom ladder hands, where the bases of the hour and minute hands are color-matched precisely to the navy dial to create the illusion that the luminous segments are floating unsupported. The sweeping seconds hand features a reverse lollipop counterweight and is tipped in international orange, a high-visibility color explicitly chosen for marine and alpine search and rescue operations. Nigel Cabourn's signature logo appears directly below the twelve o'clock position in this same high-visibility orange, perfectly balancing the utilitarian text blocks situated above the six o'clock marker.
Flipping the instrument over exposes a solid 316L stainless steel caseback secured via heavy industrial threading. The entire flat surface is deeply engraved with a dazzle camouflage pattern, a complex, intersecting geometric motif originally developed for naval vessels during the First World War to confuse enemy optical rangefinders regarding speed and heading. Alongside this historical pattern, the caseback displays crucial identification data, including the collaboration partners, the 300-meter depth rating, and the specific limited edition numbering for each individual unit. The sheer thickness of this rear metal plate contributes significantly to the overall structural integrity of the housing, ensuring the internal cavity remains perfectly isolated from external atmospheric pressure changes. Furthermore, the heavily grooved notches along the perimeter allow for precise torque application during factory assembly and facilitate secure lock-up after subsequent battery replacements.

Courtesy of UNIMATIC
The Movement
Internal operations are governed by the Seiko Instruments VH31A quartz caliber, a deliberate component selection that prioritizes raw durability over mechanical complexity. Traditional automatic escapements contain dozens of microscopic pivots, gear trains, and fragile balance springs that remain highly susceptible to sudden kinetic impacts or heavy sustained vibration. Quartz technology bypasses these vulnerabilities entirely, utilizing a solid-state electronic oscillator that delivers a highly stable accuracy rating of plus or minus fifteen seconds per month. What distinctly separates the VH31A from standard stepping-motor quartz engines is its four-beat-per-second sweeping seconds hand. This mechanical-style actuation provides the visual fluidity of a traditional watch without sacrificing the inherent shock resistance and temperature stability of a battery-powered module. Power is continuously supplied by a standard Seizaiken battery cell, yielding an operational lifespan of approximately two years before requiring field replacement.
Expedition parameters demand further internal stabilization, leading UNIMATIC to implement their proprietary 360-degree shock protection system. This internal architecture consists of a custom-molded thermoplastic polyurethane cage, specifically colored bright orange, which entirely suspends the VH31A caliber within the heavy steel chassis. By isolating the movement from direct contact with the hard internal metal walls, the polyurethane acts as a dedicated elastomeric shock absorber, drastically reducing the transmission of kinetic energy during severe drops or impacts. This specific combination of a lightweight quartz module and a suspended isolation system allows the Modello Cinque UT5-TANC to successfully pass rigorous MIL-STD-810H testing protocols. Developed by the United States Department of Defense, this testing standard involves subjecting the equipment to extreme thermal shocks, high-altitude depressurization cycling, and violent multi-axis vibration profiles, confirming its absolute viability for active military or field deployment.

Courtesy of UNIMATIC
The Strap
Securing these instruments to the wrist relies on heavily woven, two-piece nylon straps equipped with dedicated nylon keepers. The UT5-TANC-A pairs its green housing with a navy blue strap, while the UT5-TANC-B contrasts its navy blue case with a forest green strap. This cross-pollination of specific colors between the two references creates a strict visual linkage across the entire collaborative project. Heavy cross-stitching reinforces the critical attachment points near the spring bars, preventing material fraying or separation under heavy tension.
Visual contrast is further enhanced by the inclusion of proprietary metal hardware that directly matches the respective case finish. Each strap features a thick tang buckle and retaining loops coated in the exact same stonewashed Cerakote as the main watch body, deeply signed with the UNIMATIC text. The decision to use a two-piece configuration rather than a continuous single-pass nylon band ensures the watch sits perfectly flat against the wrist. This layout significantly lowers the overall center of gravity and reduces the likelihood of the watch catching on field equipment or door frames. Quick-release spring bars are integrated directly into the strap ends, enabling rapid configuration changes in the field without the need for specialized metal removal tools.

Courtesy of UNIMATIC
Pricing and Availability
Distribution for the Modello Cinque UT5-TANC is strictly controlled and heavily limited, with production capped at exactly one hundred and fifty individually numbered pieces for each of the two references. Retail pricing is set at nine hundred and twenty US Dollars, or six hundred and sixty Euros excluding value-added tax. Global sales operations will commence on March seventh, twenty twenty-six, operating strictly through the primary digital storefronts of UNIMATIC, Nigel Cabourn, and The Armoury.
Included packaging consists of a heavy-duty UNIMATIC branded travel pouch designed specifically for long-term storage and secure transportation. Each retail kit also contains a standardized warranty card featuring a unique identification seal that corresponds directly to the engraved serial number found on the caseback. The manufacturer provides a comprehensive twenty-four-month global warranty covering any potential manufacturing defects in the quartz module or the structural integrity of the water resistance sealing gaskets.

Courtesy of UNIMATIC
Technical Specifications
Case: 36mm diameter, 22mm lug width, 316L stainless steel with Cerakote stonewashed coating, 2.2mm double-domed sapphire crystal, dazzle camouflage caseback
Movement: Seiko Instruments Quartz VH31A, sweeping seconds hand, plus or minus 15 seconds per month accuracy, 360-degree TPU anti-shock system
Dial: Navy blue base, printed Arabic numerals, Super-LumiNova GL old radium markers, phantom ladder hands, orange-tipped reverse lollipop seconds hand
Strap: Two-piece nylon quick-release strap with matching Cerakote hardware
Price: 920 USD
Reference Number: UT5-TANC-A (Green Case), UT5-TANC-B (Navy Blue Case)
Notes: Limited to 150 pieces per reference, MIL-STD-810H tested, 300m water resistance, launched in collaboration with Nigel Cabourn and The Armoury