SEIKO Chrono SDGZ021 Automatic Watch
Overview
The Seiko Brightz Ananta SDGZ021 is a 43mm men's automatic watch with a stainless steel case and a white analog dial protected by sapphire crystal. It uses a 8R48 caliber self-winding mechanical movement that can be manually wound and hacked (the second hand stops when the crown is pulled out). It ticks 8 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 45 hours when fully wound and will self-wind when moved.
The SDGZ021 is currently ranked #309 in popularity out of 1,137 watches in this catalog. No retailer link is on file for .com; current availability is unknown. You can see other models similar to this one 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.
SDGZ021 is only a partial model number. [learn more]
The case of the SDGZ021 measures approximately 43mm wide (not including the crown) by 15mm 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 screws down to help prevent it from being accidentally pulled out while under water. The watch has a display back to show of the 8R48 movement.The stainless steel bezel shows a tachymeter and 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 or removed using a band removal tool to be replaced with another band.
Transform the look of this watch by adding a 20mm leather band such as a Hadley Roma, Hirsch or Crown & Buckle.
The SDGZ021 provides the following features and complications:
- Second hand
- Seconds subdial
- Minute hand
- Hour hand
- Chronograph that includes subdials for hours and minutes with a minimum resolution of 1/4 second and a maximum duration of 720 minutes. The central second hand is used by the chronograph. When the chronograph is not in use this hand is stationary. Seconds are shown on the seconds subdial.
- 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.
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
#309 of 1,137 - Style Chronograph
- Gender Men's
Movement
- Type Automatic
- Caliber 8R48
- Jewels 34
- Beats per Hour 28,800 bph(8 bps)
- Power Reserve 45 Hours
- Manual Winding Yes
- Hacking Yes
- Instructions Owner's Manual
Case
- Case Width
43mm(without crown) - Case Thickness 15mm
- Case Shape Round
- Case Material Stainless Steel
- Case Code
- Crystal Material Sapphire
- Water Resistance 100 Meters(baths & shallow diving)
- Crown Position 03:00
- Screw Down Crown Yes
- Second Crown No
Complications
- Chrono Maximum 720 Minutes
- Chrono Minimum 1/4 of a Second
- Chrono Minutes Yes
- Chrono Hours Yes
- Second Hand Yes
- Seconds Subdial Yes
- Minute Hand Yes
- Hour Hand 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 Bars, Roman Numerals
- Subdial Position 3-6-9
- On the Dial
"Automatic"
Bezel
- Bezel Color Blue
- Bezel Function Fixed
- Bezel Material Stainless Steel
- On the Bezel Tachymeter
Inner Bezel / Chapter Ring / Outer Dial
- Inner Bezel Color White
- On Inner Bezel Bars
Hand Colors
- Hour Hand Blue
- Minute Hand Blue
- Second Hand Black, Silver
If you see anything that seems incorrect please let us know.
Back