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SEIKO 5 SRP731 Automatic Watch

SRP731

Overview

The Seiko SRP731 (4R36-04P0) is a 45mm men's automatic watch with a stainless steel case and a blue analog dial protected by hardlex crystal. It uses a 4R36 caliber self-winding mechanical movement that can be manually wound and hacked (the second hand stops 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 41 hours when fully wound and will self-wind when moved.

The SRP731 is currently ranked #99 in popularity out of 2,600 watches in this catalog and is on sale for $216.96 on Amazon.com (as of 2017‑04‑26 10:00 PDT - Details). This watch is part of a family of six 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.

SRP731 is only a partial model number. [learn more]

The case of the SRP731 measures approximately 45mm wide (not including the crown) by 13mm 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 watch has a display back to show of the 4R36 movement.The stainless steel bezel shows minute numbering and can be rotated. The gap between the lugs is 22mm 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 SRP731 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 SRP731 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 4R36
  • Jewels 24 
  • Beats per Hour 21,600 bph(6 bps)
  • Power Reserve 41 Hours
  • Manual Winding Yes 
  • Hacking Yes 
  • Instructions Owner's Manual

Case

  • Case Width 45mm(without crown)
  • Case Thickness 13mm
  • Case Shape Round 
  • Case Material Stainless Steel 
  • Case Code 04P0 
  • 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 22mm
  • Replaceable Band Yes 
  • Band Material Bracelet 
  • Band Color Silver 

Dial

  • Dial Color Blue 
  • Dial Reference  
  • Hour Markings Bars 
  • On the Dial

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

Bezel

  • Bezel Color Black, Blue 
  • Bezel Function Unidirectional 
  • Bezel Material Stainless Steel 
  • On the Bezel Minute Numbering

Inner Bezel / Chapter Ring / Outer Dial

  • Inner Bezel Color None 
  • On Inner Bezel Nothing

Hand Colors

  • Hour Hand White 
  • Minute Hand White 
  • Second Hand Black, Red 

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

SRP731


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