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A-5 UDT: OG-107 NATO - Vurvi

Praesidus A-5 UDT: OG-107 NATO The A-5 UDT was created to meet the long-standing need for reliable underwater timekeeping. Based on the original USN BUSHIPS design, this rugged dive watch features an oversized crown and solid case. During World War II, it was the only way Underwater Demolition Teams could ensure their watches remained water-resistant during long dives.
At first glance, the A-5 UDT may seem simple, but it’s much more. The deeply embossed indexes and minute track stand out from the matte black dial, enhancing legibility. The brand and the collection name are also embossed and visible under certain conditions without distracting from critical timekeeping. Swiss Super-Luminova ensures legibility for low-light and deep-underwater operations.
Inspired by WW2 USN BUSHIPS designs, the A-5 is “field-tested.” Its oversized crown cap, welded directly onto the case, speaks to its operational origins. The original design has been enhanced to achieve 20ATM (660ft) water resistance with a double-domed sapphire crystal.
To ensure precision and reliability, the A-5 UDT features a Swiss Automatic P024 movement from SOPROD, known for its accuracy and 41-hour power reserve. Anti-magnetic and shockproof, it can withstand harsh conditions, fulfilling its mission as a durable dive watch.

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A-5 UDT: OG-107 NATO

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