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






Expert and certified watch technician with over 15 years of experience, author and founder of CHLB
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€30 | ||
€25 | ||
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UBLAST Automatic Diver GMT, reference UBDGM40BK, from period 2020+, with a Japanese Seiko NH34 automatic GMT movement, 40 mm stainless steel case, long steel bracelet, new condition with original box, papers and international warranty.
Description from the seller
UBLAST is a registered Italian brand. The watches are made with carefully selected quality materials and finished with extreme attention to detail; every single piece is subjected to rigorous checks, including functional, shock resistance, and precision tests. All watches are new, never worn, and come with original box, documents, tag, certificate of authenticity, and a two-year international warranty stamped at the time of purchase.
We propose the model "UBLAST DIVER GMT / Dual Time"
Case: 316L stainless steel – bidirectional 120-click bezel – GMT automatic Seiko NH34 - 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 rotating steel, 120 clicks
Movement: Japanese automatic GMT Seiko NH34 - hour rate 21,600 vph - power reserve about 41 hours – 24 jewels
Glass: mineral with magnifier
Crown: 316L stainless steel – screwed down at 3 o'clock
Caseback: 316L stainless steel – screwed down
Bracelet: 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 – includes two-year international warranty
CONTENT
Full set (The watch box may differ from the photos depending on stock available at the time of shipment, but we guarantee the original brand box)
INFO
The photos were taken on the actual watch; please note that color may vary slightly due to light reflections, shadows, or direct light during shooting.
IMPORTANT NOTES FIRST USE
For all watches with steel bracelets and leather, rubber, nato, etc., it is possible to remove links, punch/shorten with DIY tools, but only with the necessary tools; if you cannot do it yourself, please consult a professional. All automatic watches require winding at first use; wrist movement alone is not sufficient to fully wind the movement.
RULE FOR ALL WATCHES WITH A DATE
To avoid possible damage to the movement, do not set the date using the crown when the time is between 21:00 and 03:00. It is advisable to set the date when the time is between 03:05 and 20:55. (Some models have a screw-down crown; for settings, gently unscrew the crown counterclockwise. Remember to reseal the crown properly after setting.)
LOGISTICS/WAREHOUSE
All orders ship from our warehouse in ITALY
NATIONAL AND EUROPEAN SHIPPING
No additional fees within the European Union
OUTSIDE EUROPE - WORLDWIDE SHIPPING
All import duties and taxes for destinations outside the EU are the buyer’s responsibility; we are not liable for extra costs
FEEDBACK
Your feedback is very important to us and helps us offer better service to buyers. If we have made an error, please contact us before leaving negative or neutral feedback; our goal is to satisfy all buyers of their purchase. Happy bidding.
Seller's Story
Translated by Google TranslateUBLAST is a registered Italian brand. The watches are made with carefully selected quality materials and finished with extreme attention to detail; every single piece is subjected to rigorous checks, including functional, shock resistance, and precision tests. All watches are new, never worn, and come with original box, documents, tag, certificate of authenticity, and a two-year international warranty stamped at the time of purchase.
We propose the model "UBLAST DIVER GMT / Dual Time"
Case: 316L stainless steel – bidirectional 120-click bezel – GMT automatic Seiko NH34 - 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 rotating steel, 120 clicks
Movement: Japanese automatic GMT Seiko NH34 - hour rate 21,600 vph - power reserve about 41 hours – 24 jewels
Glass: mineral with magnifier
Crown: 316L stainless steel – screwed down at 3 o'clock
Caseback: 316L stainless steel – screwed down
Bracelet: 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 – includes two-year international warranty
CONTENT
Full set (The watch box may differ from the photos depending on stock available at the time of shipment, but we guarantee the original brand box)
INFO
The photos were taken on the actual watch; please note that color may vary slightly due to light reflections, shadows, or direct light during shooting.
IMPORTANT NOTES FIRST USE
For all watches with steel bracelets and leather, rubber, nato, etc., it is possible to remove links, punch/shorten with DIY tools, but only with the necessary tools; if you cannot do it yourself, please consult a professional. All automatic watches require winding at first use; wrist movement alone is not sufficient to fully wind the movement.
RULE FOR ALL WATCHES WITH A DATE
To avoid possible damage to the movement, do not set the date using the crown when the time is between 21:00 and 03:00. It is advisable to set the date when the time is between 03:05 and 20:55. (Some models have a screw-down crown; for settings, gently unscrew the crown counterclockwise. Remember to reseal the crown properly after setting.)
LOGISTICS/WAREHOUSE
All orders ship from our warehouse in ITALY
NATIONAL AND EUROPEAN SHIPPING
No additional fees within the European Union
OUTSIDE EUROPE - WORLDWIDE SHIPPING
All import duties and taxes for destinations outside the EU are the buyer’s responsibility; we are not liable for extra costs
FEEDBACK
Your feedback is very important to us and helps us offer better service to buyers. If we have made an error, please contact us before leaving negative or neutral feedback; our goal is to satisfy all buyers of their purchase. Happy bidding.
