modsbychin
Explorer II Vintage Black
Explorer II Vintage Black
The GMT-Master II, introduced in 1983, was designed for travelers and pilots. Its primary purpose was to track two time zones simultaneously, making it invaluable for international travel. Over time, it has become an iconic symbol of adventure and is cherished for its dual-time capability and classic design.
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Shipping & Waiting Time
Shipping & Waiting Time
Waiting Time:
Every timepiece is hand built upon order, resulting in a production time of 3-4 weeks. Lead time guarantees meticulous crafting and utmost satisfaction upon delivery.
Worldwide Shipping:
Insured & tracked via DHL Express/Fedex with tracking upon shipment, arrives within 5 - 7 days. Shipping cost calculated at checkout and varies country to country
Singapore Delivery:
Free, tracked & insured with tracking upon shipment via Singpost/Qexpress, arrives within 2 - 4 days
For more information, refer here: Order & Shippng
Specifications & Dimensions
Specifications & Dimensions
| Case | 316L Stainless Steel |
| Bracelet | 904L Stainless Steel with Screw In Links |
| Movement | NH34 TMI Seiko Automatic |
| Crystal | Sapphire |
| Dial | Stainless Steel |
| Lume | Blue (BGW9) |
| Crown | Screw-Down Unsigned |
| Power Reserve | 41 Hours |
| Water Resistance | 60m (6ATM) |
Dimensions:
| Case Diameter | 40mm |
| Lug to Lug | 48mm |
| Lug Width | 20mm |
| Thickness | 13mm |
Measurements
Measurements
- Recommended Wrist Size (14.5cm - 21cm)
- Bigger than 21cm? Contact us.
Regulation & Test
Regulation & Test
- Regulated to +/- 10 seconds a day
- Pressure tested at 6 ATM (60 meters)

Today I met a remarkable young watchmaker. His horological knowledge is something only found with senior tradesmen. As a vintage watch collector, I am impressed with the skill and attention-to-detail ModsbyChin as shown with a Seiko reproduction of a ref 1655 he created. Kudos to ModsbyChin. Looking forward to future projects. RT
excellent service, out to please his customers. You can always take my money sir
Fantastic purchase! Bought three Seiko mod watches and they’re exceptional - great craftsmanship, unique designs, and perfect functionality. The seller was communicative and knowledgeable, ensuring a smooth transaction. Highly recommend!
Chin is very knowledgeable about watches and patient to answer my concerns. will order next watch
Good service. Knowledgable with his craft and was more than happy to share about it with me. Appreciate his good work