A-5 UDT: OG-107 NATO
The A-5 UDT was designed to meet an operational need that has existed ever since men could dive: reliable timekeeping underwater. Based off an original USN BUSHIPS design, this dive watch exudes ruggedness with its oversized crown and solid case. During WW2, this system was the only way for Underwater Demolition Teams to safely ensure their watches’ water-resistance during extended dive missions. More than a homage, we’ve truly revived this icon.
This A-5 Strap combo is probably the most rugged & military driven. NATO straps were originally designed for special forces to use with their issued watches and it feels. Featuring a classic OG-107 green with sand-blasted loops & buckle, you’ll be set for any operation, under or above water.
The A-5 UDT
Designed for Underwater Operations
38 MM SPECS
| Case Size/ Diameter |
38mm |
|---|---|
| Case Thickness Including Glass |
12.5 mm |
| Case Material |
Stainless steel |
| Case Finish |
Sandblast |
| Case Lug Width |
20 mm |
| Strap Width |
20 mm |
| Glass |
Double Domed Sapphire |
| Water Resistance |
20 ATM |
| Movement |
Swiss-Made Soprod |
CARE GUIDE
Thanks to our expertise & quality materials your watch will require very little day-to-day care. You can help preserve its lustre by washing the case and bracelet from time to time using soapy water and a soft brush. Before cleaning your watch, always ensure that the winding crown is properly pushed down to guarantee waterproofness.
From afar. vou'd be tempted to think the A-5 UDT
is iust another simple dial - but its anything but
We've deep embossed the indexes & minute
track to raise them from the matte black dial
Thev'll.pop-out.providing legibility and
character. Just like the vintage watches, we've
embossed our brand & the collection's name
onto the dial. This makes them visible in certain
conditions while preventing any distraction from
the critical time-keeping required out of this dive
watch. As a final touch. for deep underwater
operations or low-light conditions we've used
Swiss Super-Luminova
By leaning on the WW2 USN BUSHIPS designs
the A-5 is "field-tested" like no other. The proof is
in the design - what else except for operational
requirements would've led welding an over-
sized crown cap directly onto the case? For the
A-5, we've pushed the original design further to
extract an excellent 20ATM (660ft) water-
resistance. Couoled with a double domed
sapphire crystal, not much is going to get in the
way of reliable time-keeping for this tool-watch
From afar. vou'd be tempted to think the A-5 UDT
is iust another simple dial - but its anything but
We've deep embossed the indexes & minute
track to raise them from the matte black dial
Thev'll.pop-out.providing legibility and
character. Just like the vintage watches, we've
embossed our brand & the collection's name
onto the dial. This makes them visible in certain
conditions while preventing any distraction from
the critical time-keeping required out of this dive
watch. As a final touch. for deep underwater
operations or low-light conditions we've used
Swiss Super-Luminova
By leaning on the WW2 USN BUSHIPS designs
the A-5 is "field-tested" like no other. The proof is
in the design - what else except for operational
requirements would've led welding an over-
sized crown cap directly onto the case? For the
A-5, we've pushed the original design further to
extract an excellent 20ATM (660ft) water-
resistance. Couoled with a double domed
sapphire crystal, not much is going to get in the
way of reliable time-keeping for this tool-watch
The A-5 UDT
A dive watch needs to guarantee absolute reliability & precision for the length of its mission. With that in mind, we’ve chosen to go with a Swiss Automatic P024 from SOPROD - a time tested caliber that provides high accuracy & a 41H power reserve. Anti-magnetic & shockproof, it can take a beating and still carry out its mission successfully; exactly what the A-5 UDT was designed for.
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