Big Idea Design Ti GMT vs Montblanc 1858 Geosphere 0 Oxygen The 8000 (Titanium)
The Big Idea Design Ti GMT and the Montblanc 1858 Geosphere 0 Oxygen The 8000 (Titanium) are both titanium field watches. This is a side-by-side of their case size, weight, titanium grade, movement, water resistance, and price, drawn from the verified specs in the Titanium Field Guide.
| Big Idea DesignTi GMT | Montblanc1858 Geosphere 0 Oxygen The 8000 (Titanium) | |
|---|---|---|
| Price | $975 | $6,800 |
| Case diameter | 40.5 mm | 42.0 mm |
| Thickness | – | – |
| Lug-to-lug | – | – |
| Water resistance | 200 m | 100 m |
| Weight | 53 g (head) | – |
| Titanium grade | Grade 2 (UltraHex hardened) | Titanium (grade undisclosed) |
| Surface treatment | UltraHex hardened titanium | None |
| Movement | Automatic (GMT) | Automatic worldtimer (dual time, day/night) |
| Power reserve | 42 h | ~42 h |
| Complications | GMT, Date | Worldtimer, GMT, Date |
| Crystal | Sapphire | Domed sapphire, AR coated |
| Bracelet / strap | Titanium | Titanium bracelet |
| Origin | United States | Germany |
| Confidence | High | High |
Full details: Big Idea Design Ti GMT · Montblanc 1858 Geosphere 0 Oxygen The 8000 (Titanium)
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