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

01
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06
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Alfonso Minondo
Expert
Selected by Alfonso Minondo

Over six years of professional experience in watches with extensive collector network.

Retail Estimate  € 700 - € 800
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UBLAST Automatic Diver GMT, reference UBDGM40BK, 40 mm stainless steel case, automatic movement, GMT function, 20 ATM water resistance, long stainless steel bracelet, new and unworn with original box, papers and international warranty.

AI-assisted summary

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; every single piece undergoes rigorous checks, including functional, shock, 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 – automatic GMT 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 steel bezel, 120 clicks
Movement: Japanese automatic GMT Seiko NH34 - movement frequency 21,600 beats/hour - power reserve ~41 hours – 24 jewels
Crystal: mineral with cyclops
Crown: 316L stainless steel – screw-down at 3 o'clock
Caseback: 316L stainless steel - screw-down
Bracelet: 316L stainless steel – (approx. 250 mm including case)
Clasp: 316L stainless steel - deployant
Water resistance: 20 ATM - 200 meters
Gender: men
Weight: about 150 g

CONDITIONS
Brand new – never worn – 2-year international warranty included

CONTENT
Complete set (The watch box may differ from the photos depending on stock available in warehouse at the time of shipment, but we guarantee the original brand box)

INFO
The photos are taken of the actual watch; please note that color may vary slightly due to lighting reflections, shadows, or direct light during shooting.

IMPORTANT NOTE FOR FIRST USE
For all watches with steel bracelets and leather, rubber, nato straps, etc., it is possible to remove links, punch/shorten with the proper tools; if you are not able to do it yourself, please consult a professional. All automatic watches must be wound by the crown on first use—the motion of the wrist alone is not sufficient to maintain the required power reserve.

RULE FOR ALL WATCHES WITH DATE FUNCTION
To avoid potential damage to the movement, please do not set the date with the crown when the watch time is between 21:00 and 03:00. It is recommended to set the date with the crown when the time is between 03:05 and 20:55. (Some models have a screw-down crown; for settings you need to carefully unscrew the crown counterclockwise. Do not forget to firmly screw the crown back in after adjusting the desired settings.)

LOGISTICS/WAREHOUSE
All orders are shipped from our warehouse located in ITALY

NATIONAL AND EUROPEAN SHIPPING
No additional fees to be paid within the European Union

EXTRA-EUROPEAN SHIPPING - WORLDWIDE
All additional import costs to your country outside the European Union (duties and customs) are solely the buyer's responsibility; we are not liable for any extra 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

Welcome to Watches for You, the Italian reference point with years of experience in the watch industry. As official distributors, we offer a secure shopping experience based on three pillars: professionalism I authenticity I and customer care. -------- WARRANTY AND AUTHENTICITY: Each watch in our shop is: new, original and never worn, accompanied by a 24-month international warranty. Subject to a rigorous technical check before shipment to guarantee perfect operation. ------- LOGISTICS AND SHIPMENTS: We handle every order with the utmost priority and ultra-durable packaging: Processing: Within 24 business hours from payment. Tracking: A tracking code is entered on Catawiki as soon as available. Multiple Shipments: If you have won multiple lots, and the Catawiki system has calculated more shipments for you, contact us before paying the second order, so we can recalculate and reduce shipping costs for you; this rule applies exclusively to lots with reserve price. Important: For tax reasons related to automated invoicing, it is absolutely not possible to refund shipping costs already paid. Please do not insist. ------ INSURANCE AND RECEIPT OF GOODS: We monitor every shipment until delivery, but we require your cooperation. Delivery verification: In case of damage or tampering, always sign “with reservation.” Report the incident immediately to the carrier and to us. Insurance terms: Any failed deliveries must be reported within 7 days from the scheduled date to activate the insurance procedures.. ---------ADMINISTRATION AND INVOICING: We operate in full compliance with the Italian tax system. Corporate Invoices: We issue invoices only to companies with a VAT number, upon request via message within 24 hours of payment. It will not be possible to issue invoices to private individuals, and beyond that term. Warranty activation: For the warranty the certificate of originality, the instruction manual and the Catawiki purchase receipt are required.------ RIGHT OF WITHDRAWAL: The return is guaranteed if the watch is returned exactly as received. Conditions: Intact, never worn, with all protective films and original accessories, with the box intact. Responsibility: Return shipping costs and responsibility for the goods during transport are borne by the buyer.------ CUSTOMER SERVICE AND FEEDBACK: Our support is at your service 7 days a week, including holidays. We respond to every message via the Catawiki chat in chronological order. If you encounter any problem, please kindly contact us before leaving neutral or negative feedback. We will find the best solution together. Satisfaction is our goal.------ THANKS YOU FOR CHOOSING WATCHES FOR YOU! Professionalism I authenticity I and passion at your service I
Translated by Google Translate

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; every single piece undergoes rigorous checks, including functional, shock, 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 – automatic GMT 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 steel bezel, 120 clicks
Movement: Japanese automatic GMT Seiko NH34 - movement frequency 21,600 beats/hour - power reserve ~41 hours – 24 jewels
Crystal: mineral with cyclops
Crown: 316L stainless steel – screw-down at 3 o'clock
Caseback: 316L stainless steel - screw-down
Bracelet: 316L stainless steel – (approx. 250 mm including case)
Clasp: 316L stainless steel - deployant
Water resistance: 20 ATM - 200 meters
Gender: men
Weight: about 150 g

CONDITIONS
Brand new – never worn – 2-year international warranty included

CONTENT
Complete set (The watch box may differ from the photos depending on stock available in warehouse at the time of shipment, but we guarantee the original brand box)

INFO
The photos are taken of the actual watch; please note that color may vary slightly due to lighting reflections, shadows, or direct light during shooting.

IMPORTANT NOTE FOR FIRST USE
For all watches with steel bracelets and leather, rubber, nato straps, etc., it is possible to remove links, punch/shorten with the proper tools; if you are not able to do it yourself, please consult a professional. All automatic watches must be wound by the crown on first use—the motion of the wrist alone is not sufficient to maintain the required power reserve.

RULE FOR ALL WATCHES WITH DATE FUNCTION
To avoid potential damage to the movement, please do not set the date with the crown when the watch time is between 21:00 and 03:00. It is recommended to set the date with the crown when the time is between 03:05 and 20:55. (Some models have a screw-down crown; for settings you need to carefully unscrew the crown counterclockwise. Do not forget to firmly screw the crown back in after adjusting the desired settings.)

LOGISTICS/WAREHOUSE
All orders are shipped from our warehouse located in ITALY

NATIONAL AND EUROPEAN SHIPPING
No additional fees to be paid within the European Union

EXTRA-EUROPEAN SHIPPING - WORLDWIDE
All additional import costs to your country outside the European Union (duties and customs) are solely the buyer's responsibility; we are not liable for any extra 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

Welcome to Watches for You, the Italian reference point with years of experience in the watch industry. As official distributors, we offer a secure shopping experience based on three pillars: professionalism I authenticity I and customer care. -------- WARRANTY AND AUTHENTICITY: Each watch in our shop is: new, original and never worn, accompanied by a 24-month international warranty. Subject to a rigorous technical check before shipment to guarantee perfect operation. ------- LOGISTICS AND SHIPMENTS: We handle every order with the utmost priority and ultra-durable packaging: Processing: Within 24 business hours from payment. Tracking: A tracking code is entered on Catawiki as soon as available. Multiple Shipments: If you have won multiple lots, and the Catawiki system has calculated more shipments for you, contact us before paying the second order, so we can recalculate and reduce shipping costs for you; this rule applies exclusively to lots with reserve price. Important: For tax reasons related to automated invoicing, it is absolutely not possible to refund shipping costs already paid. Please do not insist. ------ INSURANCE AND RECEIPT OF GOODS: We monitor every shipment until delivery, but we require your cooperation. Delivery verification: In case of damage or tampering, always sign “with reservation.” Report the incident immediately to the carrier and to us. Insurance terms: Any failed deliveries must be reported within 7 days from the scheduled date to activate the insurance procedures.. ---------ADMINISTRATION AND INVOICING: We operate in full compliance with the Italian tax system. Corporate Invoices: We issue invoices only to companies with a VAT number, upon request via message within 24 hours of payment. It will not be possible to issue invoices to private individuals, and beyond that term. Warranty activation: For the warranty the certificate of originality, the instruction manual and the Catawiki purchase receipt are required.------ RIGHT OF WITHDRAWAL: The return is guaranteed if the watch is returned exactly as received. Conditions: Intact, never worn, with all protective films and original accessories, with the box intact. Responsibility: Return shipping costs and responsibility for the goods during transport are borne by the buyer.------ CUSTOMER SERVICE AND FEEDBACK: Our support is at your service 7 days a week, including holidays. We respond to every message via the Catawiki chat in chronological order. If you encounter any problem, please kindly contact us before leaving neutral or negative feedback. We will find the best solution together. Satisfaction is our goal.------ THANKS YOU FOR CHOOSING WATCHES FOR YOU! Professionalism I authenticity I and passion at your service I
Translated by Google Translate

Details

Brand
Ublast
Gender
Men
Model
Automatic Diver GMT - 20 ATM
Band material
Steel
Reference number
UBDGM40BK
Band length
Long (over 200 mm)
Shipped insured
Yes
Repainted dial
No
Period
2025+
Movement
Automatic
Case material
Stainless steel
Original box included
Yes
Original papers included
Yes
Case diameter
40 mm
Original warranty included
Yes
Condition
Unworn - no signs of wear
Year
2026
ItalyVerified
9812
Objects sold
100%
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