---
type: product
title: U-Boat 3338 Darkmoon 46.5mm Kama Grey SS Watch
handle: u-boat-3338-darkmoon-46-5mm-kama-grey-ss-watch
url: >-
  https://www.hsjohnson.com/products/u-boat-3338-darkmoon-46-5mm-kama-grey-ss-watch
sku: '3338'
price: '126000.0'
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: '1260.00'
    sku: '3338'
images:
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  - >-
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  - >-
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created_at: null
updated_at: null
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  custom.amazon_price: '1260.00'
  global.tag-18-pricing-rule: '02 - Price match: google / combined'
  global.tag-21-minimum-price: '60'
---

A revolutionary timepiece where light becomes shadow. The U-Boat Darkmoon features an invisible photochromic element that responds to sunlight, gradually darkening to deep black or violet tones. This groundbreaking innovation transforms how time is displayed—rather than revealing itself in bright conditions, the dial conceals itself, creating an enigmatic visual experience. Stainless steel construction with 46.5mm case diameter. A bold statement in contemporary watchmaking that challenges conventional design.

**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**  
gray metal with a brushed soleil finish. Black hour markers and numerals. U-shaped applied hour marker treated with black superluminova. Special purple photochromic filter. Black metal hands treated with black superluminova.

**GLASS**  
domed sapphire crystal.

**BACK**  
316L stainless steel. Locking Ring System with quick battery replacement. Laser engravings + QR code.

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

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