Ublast - Automatic Diver GMT - 20 ATM - UBDGM40BK - Men - 2026






Over six years of professional experience in watches with extensive collector network.
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€2 | ||
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Watch model Automatic Diver GMT - 20 ATM with automatic movement, reference UBDGM40BK, 40 mm stainless steel case, long stainless steel bracelet, new and never worn, includes original box, papers and a two-year international warranty, for men.
Description from the seller
Official Authorized Dealer
UBLAST is an Italian registered brand.
The watches are made with carefully selected quality materials and finished with extreme attention to detail; each single piece undergoes rigorous testing, including functional, durability, and precision tests. All watches are new, never worn, and are supplied with the original box, documents, tag, certificate of authenticity, and a two-year international warranty, stamped at the time of purchase.
We offer the model "UBLAST DIVER GMT / Dual Time"
316L stainless steel case – bidirectional 120-click bezel – GMT automatic Seiko NH34 movement - mineral glass
Function: hours - minutes - seconds – date - GMT
Case: 40x14 mm stainless steel 316L
Dial: date window at 3 o'clock - luminescent indices and hands
Bezel: bidirectional 120-click stainless steel
Movement: Japanese automatic GMT Seiko NH34 - hourly oscillation 21,600 vph - power reserve about 41 hours – 24 jewels
Glass: mineral with magnifier
Crown: 316L stainless steel – screw-down at 3 o'clock
Case back: 316L stainless steel - screwed
Strap: 316L stainless steel – (about 250 mm including case)
Clasp: 316L stainless steel - deployant
Water resistance: 20 ATM - 200 meters
Gender: men
Weight: about 150 g
CONDITIONS
New, never worn – two-year international warranty included
CONTENT
Full set (The watch box may differ from the photos depending on stock availability at the time of shipment, but we guarantee the original branded box)
INFO
The photos were taken on the actual watch; please note that color may vary slightly due to lighting reflections, shadows, or direct light during shooting.
IMPORTANT NOTE FIRST USE
For all watches with steel bracelets and leather, rubber, nato straps, etc., it is possible to remove links, punch/shorten with DIY tools, but only with the necessary tools. If you are not able to do it yourself, please consult a professional.
All automatic watches need to be wound at first use; simply moving the wrist is not enough to maintain the required power reserve.
RULE FOR ALL WATCHES WITH DATE
To avoid possible damage to the watch mechanism, please do not set the date via the crown when the time is between 21:00 and 03:00. It is advisable to set the date via the crown when the time is between 03:05 and 20:55. (Some models have a screw-down crown; for settings you may need to unscrew the crown gently counterclockwise. Remember to screw the crown back in firmly after adjusting the settings.)
LOGISTICS/WAREHOUSE
All orders ship from our warehouse located in ITALY
NATIONAL AND EUROPEAN SHIPMENT
No additional tax to be paid within the European Union
EXTRA-EUROPEAN SHIPMENT - WORLDWIDE
All extra import costs to your country outside the European Union "tariffs and customs" are solely the buyer's responsibility; we are not liable for any additional charges
FEEDBACK
Your feedback is very important to us and helps us offer better service to our buyers. If we have made a mistake, please contact us before leaving negative or neutral feedback; our goal is to leave all our buyers satisfied with their purchase. Happy bidding
Seller's Story
Official Authorized Dealer
UBLAST is an Italian registered brand.
The watches are made with carefully selected quality materials and finished with extreme attention to detail; each single piece undergoes rigorous testing, including functional, durability, and precision tests. All watches are new, never worn, and are supplied with the original box, documents, tag, certificate of authenticity, and a two-year international warranty, stamped at the time of purchase.
We offer the model "UBLAST DIVER GMT / Dual Time"
316L stainless steel case – bidirectional 120-click bezel – GMT automatic Seiko NH34 movement - mineral glass
Function: hours - minutes - seconds – date - GMT
Case: 40x14 mm stainless steel 316L
Dial: date window at 3 o'clock - luminescent indices and hands
Bezel: bidirectional 120-click stainless steel
Movement: Japanese automatic GMT Seiko NH34 - hourly oscillation 21,600 vph - power reserve about 41 hours – 24 jewels
Glass: mineral with magnifier
Crown: 316L stainless steel – screw-down at 3 o'clock
Case back: 316L stainless steel - screwed
Strap: 316L stainless steel – (about 250 mm including case)
Clasp: 316L stainless steel - deployant
Water resistance: 20 ATM - 200 meters
Gender: men
Weight: about 150 g
CONDITIONS
New, never worn – two-year international warranty included
CONTENT
Full set (The watch box may differ from the photos depending on stock availability at the time of shipment, but we guarantee the original branded box)
INFO
The photos were taken on the actual watch; please note that color may vary slightly due to lighting reflections, shadows, or direct light during shooting.
IMPORTANT NOTE FIRST USE
For all watches with steel bracelets and leather, rubber, nato straps, etc., it is possible to remove links, punch/shorten with DIY tools, but only with the necessary tools. If you are not able to do it yourself, please consult a professional.
All automatic watches need to be wound at first use; simply moving the wrist is not enough to maintain the required power reserve.
RULE FOR ALL WATCHES WITH DATE
To avoid possible damage to the watch mechanism, please do not set the date via the crown when the time is between 21:00 and 03:00. It is advisable to set the date via the crown when the time is between 03:05 and 20:55. (Some models have a screw-down crown; for settings you may need to unscrew the crown gently counterclockwise. Remember to screw the crown back in firmly after adjusting the settings.)
LOGISTICS/WAREHOUSE
All orders ship from our warehouse located in ITALY
NATIONAL AND EUROPEAN SHIPMENT
No additional tax to be paid within the European Union
EXTRA-EUROPEAN SHIPMENT - WORLDWIDE
All extra import costs to your country outside the European Union "tariffs and customs" are solely the buyer's responsibility; we are not liable for any additional charges
FEEDBACK
Your feedback is very important to us and helps us offer better service to our buyers. If we have made a mistake, please contact us before leaving negative or neutral feedback; our goal is to leave all our buyers satisfied with their purchase. Happy bidding
