SEIKO STQ003 Kinetic Watch
Overview
The Seiko STQ003 (5J21-0A70) is a 40mm men's kinetic watch with a stainless steel case and a black analog dial protected by hardlex crystal. It uses a 5J21 caliber quartz movement that cannot be manually wound but can be hacked (the second hand stops when the crown is pulled out). The watch should run for up to 6 months when fully charged and will recharge when moved.
The STQ003 is currently ranked #291 in popularity out of 510 watches in this catalog. No retailer link is on file for .com; current availability is unknown. This watch is part of a family of three 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 page. 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.
STQ003 is only a partial model number. [learn more]
The case of the STQ003 measures approximately 40mm wide (not including the crown) by 12mm 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 is fixed (cannot be rotated). The gap between the lugs is 20mm and the bracelet band can be adjusted to fit using a link removal tool but may be difficult to replace with another band due to the shape of the lugs.
The STQ003 provides the following features and complications:
- Second hand
- Minute hand
- Hour hand
Seiko Date Finder
If you have this watch and want to know when it was made simply enter the six digit serial number from the caseback below then click Find Date. Learn more
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.
General
- Retailers No retailer link on file for .com
Search: Amazon | eBay | Chrono24 - Popularity 291
- Style Dress
- Gender Men's
Movement
- Type Kinetic Quartz
- Caliber 5J21
- Power Reserve 6 Months
- Manual Winding No
- Hacking
Yes - Instructions
Case
- Case Width
40mm(without crown) - Case Thickness 12mm
- Case Shape Cushion
- Case Material Stainless Steel
- Case Code 0A70
- 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
Band
- Band Width 20mm
- Replaceable Band No / Difficult
- Band Material Bracelet
- Band Color Black, Silver
Dial
- Dial Color Black
- Dial Reference 0A68
- Hour Markings Bars
- On the Dial
Water Resistance
Bezel
- Bezel Color Silver
- Bezel Function Fixed
- Bezel Material Stainless Steel
- On the Bezel Nothing
Inner Bezel / Chapter Ring / Outer Dial
- Inner Bezel Color Black
- On Inner Bezel Minute Numbering
Hand Colors
- Hour Hand Silver
- Minute Hand Silver
- Second Hand Silver
If you see anything that seems incorrect please let us know.
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