---
type: product
title: Delma 41501.670.6.044 Shell Star Decompression Timer Automatic Watch
handle: delma-41501-670-6-044-shell-star-decompression-timer-automatic-watch
url: >-
  https://www.hsjohnson.com/products/delma-41501-670-6-044-shell-star-decompression-timer-automatic-watch
sku: 41501.670.6.044
price: '114700.0'
currency: GBP
tags:
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  - out_of_stock
  - preorder
  - SIGNUP15
  - Womens
collections:
  - Watches
  - Out of stock
  - All
  - Mens Watches
  - Womens Watches
  - Delma
  - SIGNUP15
variants:
  - title: Default Title
    price: '1147.00'
    sku: 41501.670.6.044
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created_at: null
updated_at: null
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---

The Delma Shell Star Decompression Timer merges precision engineering with professional diving capability. This automatic timepiece draws from DELMA's storied heritage, featuring signature design elements including a spade seconds hand, railway track indices, and contrasting orange and white markers. The integrated decompression timer—rooted in Swiss diving research from the 1950s-60s—provides essential safety information at a glance, displaying when decompression stops are required during ascent. The unidirectional blue bezel facilitates accurate dive timing, whilst the dial's vertical depth scale and ring markings offer critical decompression guidance. Built for depths to 500m with a helium escape valve and robust construction, this instrument delivers genuine technical functionality. The transparent case back reveals the automatic movement, whilst a blue rubber strap completes this sophisticated diving tool designed for serious underwater exploration.

**We are a Delma UK authorised dealer**

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

  

**CASE DIMENSIONS**  
Diameter 44 mm  
Height 13.8 mm  
Lug width 24 mm  
Lug-to-lug size 51 mm

**Case Material**  
316L stainless steel with helium escape valve

**Case Finish**  
Brushed and polished

**Case Back**  
Screw-down stainless steel with 4 screws and mineral crystal

**Bezel**  
Blue anodized aluminum, unidirectional diver bezel

**Crystal**  
Sapphire crystal with AR coating

**Crown**  
Stainless steel screw-down

**Dial**  
Blue dial with decompression table, applied indexes with SLN C5

**Hands**  
Hour, minute and central seconds with SLN C5

**Bracelet**  
Blue genuine rubber strap

**Clasp**  
Stainless-steel buckle

**Water-resistance**  
50 ATM / 500 m / 1650 ft

**Weight**  
150 g