---
type: product
title: U-Boat 3340 Darkmoon 46.5mm Kama Blue SS Watch
handle: u-boat-3340-darkmoon-46-5mm-kama-blue-ss-watch
url: >-
  https://www.hsjohnson.com/products/u-boat-3340-darkmoon-46-5mm-kama-blue-ss-watch
sku: '3340'
price: '119000.0'
currency: GBP
tags:
  - Mens
  - new-arrival
  - out_of_stock
  - preorder
collections:
  - Watches
  - U-Boat
  - Out of stock
  - All
  - Mens Watches
  - New Arrivals
variants:
  - title: Default Title
    price: '1190.00'
    sku: '3340'
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created_at: null
updated_at: null
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  custom.amazon_price: '1190.00'
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---

Light becomes your adversary. This U-Boat timepiece harnesses a revolutionary photochromic technology that responds to sunlight, progressively darkening the dial into deep violet or absolute black. The innovation transforms how time is displayed—concealing rather than revealing. A bold departure from conventional watchmaking, where visibility surrenders to shadow. The 46.5mm Kama Blue stainless steel case anchors this striking aesthetic, merging technical mastery with enigmatic design. Time exists in darkness now.

**We are a U-Boat UK authorised dealer**

**New boxed stock with full retail boxes & paperwork**

  

**MOVEMENT**  
ronda 762, lubricated in an oil bath.

**FUNCTIONS**  
hours, minutes.

**CASE**  
316L stainless steel. Screw-down crown. Diameter: 46.50 mm.

**DIAL**  
blue metal with a sunburst brushed finish. Beige hour markers and numerals. U-shaped applied hour marker treated with beige superluminova. Special smoked photochromic filter. Black metal hands with beige superluminova coating.

**GLASS**  
domed sapphire crystal.

**BACK**  
316L steel. Locking ring system with quick battery replacement. Laser engravings + QR.

**WATER RESISTANCE**  
50 m, 5 ATM.

**STRAP**  
calfskin leather strap. Ref. 7872/Z 316L stainless steel buckle. Ref. 5466/Screw.