Buy wisely
Buy wiselyBuy wisely
For RetailersFor developers
  1. Home
Buy wisely

BuyWisely is your one stop price comparison platform, delivering the best deals from over 20,000 online shops. We empower shoppers to make smart, cost-effective choices by offering transparent pricing, price history, and the latest deals across a broad range of products. With BuyWisely, your money goes further.

Popular Shops
JB Hi-Fi
The Good Guys
Harvey Norman
Appliances Online
Bing Lee
Kogan
Amazon
Officeworks
Contact Us
[email protected]
Affiliate Disclosure
Legal Information
Privacy Policy
Logos provided by Logo.dev
© 2026 BuyWisely•Price data powered by pricesAPI.io•Retailers: SellWisely.io
Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch
Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch
Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch
Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch
Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch
Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch
Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch
Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch
Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch
Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch

Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch

$185.00

(124 reviews)

The Seiko, Seiko 5 series features a stainless steel 38mm case, with a fixed bezel, a grey dial and a scratch resistant hardlex crystal. The stainless steel band is fitted with a buckle clasp. This beautiful wristwatch, powered by automatic movement supporting: date, day, hour, minute, second functions. This watch has a water resistance of up to 100 feet/30 meters, suitable for short periods of recreational swimming. This stylish timepiece is sure to complete any man's collection.

The Seiko, Seiko 5 series features a stainless steel 38mm case, with a fixed bezel, a grey dial and a scratch resistant hardlex crystal. The stainless steel band is fitted with a buckle clasp. This beautiful wristwatch, powered by automatic movement supporting: date, day, hour, minute, second functions. This watch has a water resistance of up to 100 feet/30 meters, suitable for short periods of recreational swimming. This stylish timepiece is sure to complete any man's collection.

Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch

(124 reviews)

The Seiko, Seiko 5 series features a stainless steel 38mm case, with a fixed bezel, a grey dial and a scratch resistant hardlex crystal. The stainless steel band is fitted with a buckle clasp. This beautiful wristwatch, powered by automatic movement supporting: date, day, hour, minute, second functions. This watch has a water resistance of up to 100 feet/30 meters, suitable for short periods of recreational swimming. This stylish timepiece is sure to complete any man's collection.

The Seiko, Seiko 5 series features a stainless steel 38mm case, with a fixed bezel, a grey dial and a scratch resistant hardlex crystal. The stainless steel band is fitted with a buckle clasp. This beautiful wristwatch, powered by automatic movement supporting: date, day, hour, minute, second functions. This watch has a water resistance of up to 100 feet/30 meters, suitable for short periods of recreational swimming. This stylish timepiece is sure to complete any man's collection.

$185.00 - $749.10

in 53 offers

The lowest price for Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch right now is $185.00 at DownUnderWatches.com, compared across 21 retailers.

The all-time low was $161.00 on 6 Feb 2025 — today's price is 15% above the lowest ever. That's a little above the best price we've seen.

Prices last updated 1 Nov 2026.

Price comparison

Price data powered by pricesAPI.io

Last updated at 01/11/2026 22:10:18

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
https://www.google.com/s2/favicons?domain=amazon.com.au&sz=64Amazon.com.au

$238.00

Seiko Mens Seiko 5 Automatic Analog Business Automatic SNK621K1

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

https://www.google.com/s2/favicons?domain=downunderwatches.com&sz=64DownUnderWatches.com

$185.00

Refurbished Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch

Free delivery

https://www.google.com/s2/favicons?domain=chrono24.com.au&sz=64Chrono24.com.au

$207.00

Seiko SNK621K1

Free delivery

https://www.google.com/s2/favicons?domain=creationwatches.com&sz=64CreationWatches.com

$226.67

Refurbished Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch

Free delivery

https://www.google.com/s2/favicons?domain=psbwatches.com&sz=64Psb Watches

$242.00

Seiko 5 Men's Automatic Watch SNK621K1 Gray Blue

Delivery $43.59

https://www.google.com/s2/favicons?domain=monawatch.com&sz=64Monawatch

$246.00

Seiko 5 SNK621K1 Automatic Men's Watch

Delivery between 6–10 Nov $47.46

https://www.google.com/s2/favicons?domain=kogan.com&sz=64Kogan.com

$247.07

Seiko 5 Dress Automatic Grey Dial Silver Steel Case Band SNK621K1 Men's Watch

Free delivery

https://www.google.com/s2/favicons?domain=dicksmith.com.au&sz=64Dick Smith AU

$247.07

Seiko 5 Dress Automatic Grey Dial Silver Steel Case Band SNK621K1 Men's Watch

Free delivery

https://www.google.com/s2/favicons?domain=mightyape.com.au&sz=64MightyApe.com.au

$247.07

Seiko 5 Dress Automatic Grey Dial Silver Steel Case Band SNK621K1 Men's Watch

Free delivery

https://www.google.com/s2/favicons?domain=strapseeker.com&sz=64Strapseeker

$267.18

Seiko 5 Grey Dial Mechanical SNK621K1 SNK621 SNK621K Casual Watch

Free delivery

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

18 April 2024

originally posted on lazada.sg

Accurate time for auto watch. Look better than i anticipated. I think this model will eventually become a collector item for japanese watchesAfter using this watch for 2 weeks, I notice that it is slow by 1 to 1.5 minutes / day! Since it has an international guarantee card issued by Seiko, i brought it to Thong Sia Co (S )Pte Ltd for calibration. Thong Sia said the guarantee card with the chop RSL Watches Dealer is not an authorised dealer therefore they have to charge for any service on this watch.I bought the watch from Creation. Does Crestion has any comment on this guarantee issue??Anyway, as a warning to all buyer of watches from Lazada or similar venues, the guarantee cards may not be honoured. Thong Sia also claimed that there were many complains on cards ... MoreAccurate time for auto watch. Look better than i anticipated. I think this model will eventually become a collector item for japanese watchesAfter using this watch for 2 weeks, I notice that it is slow by 1 to 1.5 minutes / day! Since it has an international guarantee card issued by Seiko, i brought it to Thong Sia Co (S )Pte Ltd for calibration. Thong Sia said the guarantee card with the chop RSL Watches Dealer is not an authorised dealer therefore they have to charge for any service on this watch.I bought the watch from Creation. Does Crestion has any comment on this guarantee issue??Anyway, as a warning to all buyer of watches from Lazada or similar venues, the guarantee cards may not be honoured. Thong Sia also claimed that there were many complains on cards issed with RSL stamp. So BEWARE!!!

18 September 2024James

originally posted on walmart.com

Watch face is perfectly sized.37-38mm face is just tight.Larger 41-42 watch faces feel like a wall click on the wrist.Seiko has many variations of this watch. This is my favorite.

Pewter Blue Gem
3 December 2022tmenzil

originally posted on ebay.com

One of a kind color display with unique day of week placement, very comfortable read time and time again. Band stands apart with smoothness that seems to float on wrist. Keeper among the best.

Specification

GPSNo
Heart Rate MonitoringNo
Sleep MonitoringNo
Step CountingNo
Calorie ComputationNo

Price comparison

Updated 7 days ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
https://www.google.com/s2/favicons?domain=amazon.com.au&sz=64
Amazon.com.au

$238.00

Seiko Mens Seiko 5 Automatic Analog Business Automatic SNK621K1

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

https://www.google.com/s2/favicons?domain=downunderwatches.com&sz=64
DownUnderWatches.com

$185.00

Out of stock

Refurbished Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch

Free delivery

https://www.google.com/s2/favicons?domain=chrono24.com.au&sz=64
Chrono24.com.au

$207.00

Seiko SNK621K1

Free delivery

https://www.google.com/s2/favicons?domain=creationwatches.com&sz=64
CreationWatches.com

$226.67

Refurbished Seiko 5 Automatic 21 Jewels SNK621 SNK621K1 SNK621K Men's Watch

Free delivery

https://www.google.com/s2/favicons?domain=psbwatches.com&sz=64
Psb Watches

$242.00

Out of stock

Seiko 5 Men's Automatic Watch SNK621K1 Gray Blue

Delivery $43.59

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

18 April 2024

Accurate time for auto watch. Look better than i anticipated. I think this model will eventually become a collector item for japanese watchesAfter using this watch for 2 weeks, I notice that it is slow by 1 to 1.5 minutes / day! Since it has an international guarantee card issued by Seiko, i brought it to Thong Sia Co (S )Pte Ltd for calibration. Thong Sia said the guarantee card with the chop RSL Watches Dealer is not an authorised dealer therefore they have to charge for any service on this watch.I bought the watch from Creation. Does Crestion has any comment on this guarantee issue??Anyway, as a warning to all buyer of watches from Lazada or similar venues, the guarantee cards may not be honoured. Thong Sia also claimed that there were many complains on cards ... MoreAccurate time for auto watch. Look better than i anticipated. I think this model will eventually become a collector item for japanese watchesAfter using this watch for 2 weeks, I notice that it is slow by 1 to 1.5 minutes / day! Since it has an international guarantee card issued by Seiko, i brought it to Thong Sia Co (S )Pte Ltd for calibration. Thong Sia said the guarantee card with the chop RSL Watches Dealer is not an authorised dealer therefore they have to charge for any service on this watch.I bought the watch from Creation. Does Crestion has any comment on this guarantee issue??Anyway, as a warning to all buyer of watches from Lazada or similar venues, the guarantee cards may not be honoured. Thong Sia also claimed that there were many complains on cards issed with RSL stamp. So BEWARE!!!

originally posted on lazada.sg
18 September 2024

Watch face is perfectly sized.37-38mm face is just tight.Larger 41-42 watch faces feel like a wall click on the wrist.Seiko has many variations of this watch. This is my favorite.

James originally posted on walmart.com
Pewter Blue Gem
3 December 2022

One of a kind color display with unique day of week placement, very comfortable read time and time again. Band stands apart with smoothness that seems to float on wrist. Keeper among the best.

tmenzil originally posted on ebay.com
Seiko 5 Mens watch
19 September 2017

These watches by Seiko are some of the best one can purchase anywhere. As an automatic watch one never has to replace batteries, simply just the normal everyday movements keep it wound. I really like these. This new one especially is so well done. brushed chrome and bright chrome done in perfect combination.

boblonben originally posted on ebay.com
Very Disappointed. Always liked Seiko until now.
14 January 2019

The watchband is very cheaply made. The watch is wound by motion when you are wearing it. The battery does not store enough energy to made it through the night. Therefore, you have to reset it every morning.Very disappointed in this watch.

franklinsteelers originally posted on ebay.com

Specification

GPSNo
Heart Rate MonitoringNo
Sleep MonitoringNo
Step CountingNo
Calorie ComputationNo

You may also like

Seiko Men's 5 Automatic 21 Jewel Watch
Seiko Men's 5 Automatic 21 Jewel Watch$158.00 - $749.68
Compare 53 offers
Seiko 5 Stainless Steel Silver Dial 21 Jewels Automatic SNKN58K1 50M Mens Watch
Seiko 5 Stainless Steel Silver Dial 21 Jewels Automatic SNKN58K1 50M Mens Watch$294.00 - $315.80
Compare 3 offers