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SEIKO Diver SNZJ31 Automatic Watch

SNZJ31

Overview

The Seiko SNZJ31 (7S36-05C0) is a 39mm men's automatic watch with a stainless steel case and a white analog dial protected by hardlex crystal. It uses a 7S36 caliber self-winding mechanical movement that cannot be manually wound or hacked (the second hand does not stop when the crown is pulled out). It ticks 6 times per second which gives the second hand a smoother movement than quartz watches which tick once per second. The watch should run for up to 43 hours when fully wound and will self-wind when moved.

The SNZJ31 is currently ranked #317 in popularity out of 751 watches in this catalog. Check availability on Amazon.com. This watch is part of a family of four watches that are identical except for their color or strap. You can see the other variations in this family as well as other similar models on the left side of the pagein the similar watches section below. By clicking the checkbox under a similar model you can compare that model with this one side-by-side. We use nearly 100 different weighted criteria to calculate which models are the most similar to one another.

This model may be available in other countries and currencies.

SNZJ31 is only a partial model number. [learn more]

The case of the SNZJ31 measures approximately 39mm wide (not including the crown) by 10mm thick and is water resistant to 100 meters. This should be sufficient for splashes, rain, baths, showers & swimming (shallow diving) but is not recommended for scuba diving. The crown does not screw down which increases the risk that it could be pulled out accidentally while under water. The stainless steel bezel shows minute numbering and can be rotated. The gap between the lugs is 20mm and the bracelet band can be adjusted to fit using a link removal tool or removed using a band removal tool to be replaced with another band.

The SNZJ31 provides the following features and complications:

  • Second hand
  • Minute hand
  • Hour hand
  • Day window to show the day of the week including two language choices for the day (English and either Spanish, Arabic, Kanji, Chinese, French, German, Danish or Roman Numerals). When setting the day keep turning the crown to get to the next language. On most models SUN will be red and on some models SAT will be blue.
  • Date window to show the day of the month. Note that some watches may be damaged if you attempt to change the date between 8:00 PM and 2:00 AM, in which case you should change the time to be outside that range first then reset the time after adjusting the date. Check your watch manual for details.
  • Rotatable bezel


Specifications [edit]

Full specifications are listed below. Please report any errors by clicking the edit link above then use the appropriate icon to provide your input. If the SNZJ31 is not exactly what you're looking for you can also search our catalog by selecting from an extensive list of criteria to help you find exactly what you are looking for.

General

Movement

  • Type Automatic
  • Caliber 7S36
  • Jewels 23 
  • Beats per Hour 21,600 bph(6 bps)
  • Power Reserve 43 Hours
  • Manual Winding No 
  • Hacking No 
  • Instructions Owner's Manual

Case

  • Case Width 39mm(without crown)
  • Case Thickness 10mm
  • Case Shape Round 
  • Case Material Stainless Steel 
  • Case Code 05C0 
  • Crystal Material Hardlex 
  • Water Resistance 100 Meters(baths & shallow diving)
  • Crown Position 03:00 
  • Screw Down Crown No 
  • Second Crown No 

Complications

  • Second Hand Yes 
  • Minute Hand Yes 
  • Hour Hand Yes 
  • Day Window Yes 
  • Date Window Yes 

Band

  • Band Width 20mm
  • Replaceable Band Yes 
  • Band Material Bracelet 
  • Band Color Silver 

Dial

  • Dial Color White 
  • Dial Reference  
  • Hour Markings Roman Numerals 
  • On the Dial

    5 Shield, "Automatic", "Jewels", "SPORTS", Water Resistance
     

Bezel

  • Bezel Color Silver 
  • Bezel Function Unidirectional 
  • Bezel Material Stainless Steel 
  • On the Bezel Minute Numbering

Inner Bezel / Chapter Ring / Outer Dial

  • Inner Bezel Color White 
  • On Inner Bezel Bars

Hand Colors

  • Hour Hand Silver 
  • Minute Hand Silver 
  • Second Hand Silver 

If you see anything that seems incorrect please let us know.

SNZJ31


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