2.0396 XL SUBURBAN MILITARY ALARM conversion 47mm, Swiss 1920s

£1,330.00 (incl. VAT)

Large, bold military style conversion watch with an antique 1920’s Brevet movement, visible through the glazed caseback. This pocket watch movement and original enamel dial have been converted in our workshop to a wrist watch! We’ve built a custom case for it, and also relumed the numerals with a non radioactive substance, aged to look authentic. This Suburban also has a rare gong and hammer alarm mechanism, which produces a crystal clear and satisfying sound!

Out of stock

Key Features

A gorgeous moderately large pocket watch conversion project straight from our workshop. This ‘Suburban’ Military style watch sports a rare gong and hammer alarm function, freshly relumed non radioactive numerals, and a beautiful display back. The original enamel dial features a running seconds subdial and alarm setting subdial, all beautifully crisp and legible. The same can be said of the numerals which we have removed the radium from, repainted with non-radioactive lume, and aged to look authentic.

Here’s a brief set of instructions on using the watch functions:

  • Wind up the movement – turn crown clockwise.
  • Set time – pull out the crown, set time forward only.
  • Wind up the alarm – push/hold right pusher, wind up with crown
  • Set alarm time – push/hold left pusher, turn crown to set it to desired hour.

It’s worth mentioning that the alarm can potentially sound 5-10 minutes in advance of its intended hour. Such is the case with mechanical movements, they’re never as accurate as digital! Much less a watch from the 1920’s. In spite of this, it is a truly marvellous piece of horological technology, and we have had a pleasure converting it into a wearable timepiece.

Servicing and Guarantee

This timepiece has been serviced with full disassembly. Make sure to follow the usage and care guidelines.


Case and Strap

  • Purpose built steel case with wire lugs.
  • ‘Olive piece’ lugs fixings.
  • Winding crown at the top.
  • Glazed glass display back.
  • New 22mm leather strap.


  • Diameter: 48.6mm
  • Height: 58.6mm
  • Thickness: 15mm
  • Strap width: 22mm

Dial and Hands

  • Original enamel dial.
  • Arabic numerals with non radioactive lume.
  • Seconds subdial.
  • Alarm subdial.
  • Cathedral style hands with lume.


  • Swiss made movement.
  • Renova calibre Brevet.
  • Manual wind.
  • 15 jewels.
  • Adjusted in 3 positions.
  • Geneva stripe decoration.
  • Gong and hammer alarm function.
  • 35+ hours power reserve.

Testing results:

  • Testing duration: 2 week cyclic test.
  • Average timekeeping range: 20-45 sec/day.

Servicing and Guarantee

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