Ball Watch Company Engineer M
Current top-tier collection built around Ball's in-house RRM7xxx manufacture calibers
3 references
“Differs” marks a spec with different recorded values. — means not recorded.
| Spec | DD3100A-S1C-BK Engineer M Skindiver III | NM9032C-S1CJ-BK Engineer M Marvelight | NM9032C-S3CJ-BK Engineer M Endurance |
|---|---|---|---|
| Case size Differs | 41.5 mm | 40 mm | 40 mm |
| Lug to lug Differs | 52 mm | 46.6 mm | 46.6 mm |
| Thickness Differs | 13.8 mm | 13.4 mm | 12.05 mm |
| Lug width Differs | 22 mm | 20 mm | 20 mm |
| Case Differs | Stainless steel, round | 904L stainless steel, sapphire caseback, round | 904L stainless steel, round |
| Bezel | Sapphire Unidirectional rotating | Not recorded | Not recorded |
| Crystal Differs | Sapphire, anti-reflective, dome-shaped | Sapphire, anti-reflective | Sapphire, anti-reflective |
| Water resistance Differs | 300 m | 100 m | 100 m |
| Caliber Differs | BALL RRM7309-C | BALL RRM7309-C | BALL RRM7309-CS |
| Movement maker | BALL Watch Company (manufacture) | BALL Watch Company (manufacture) | BALL Watch Company (manufacture) |
| Movement type | Automatic | Automatic | Automatic |
| Frequency | 28800 vph | 28800 vph | 28800 vph |
| Power reserve | 80 h | 80 h | 80 h |
| Complications | date (magnified) | date (magnified) | date (magnified) |
| Dial | Black | Black | Black |
| Lume Differs | Tritium gas tubes (H3), 40 micro tubes on bezel/hands/dial | Tritium gas tubes (H3), 17 micro tubes on hands/dial | Tritium gas tubes (H3), 17 micro tubes on hands/dial |
| Bracelet Differs | Stainless steel, folding buckle | Stainless steel, folding buckle | 904L stainless steel |
| Limited edition | Limited to 1,000 pieces | Not recorded | Not recorded |