TECHNICAL SPECIFICATIONS - Leica ZM 12
| Calibre | Leica LA–3002 in collaboration with Chronode SA, Switzerland | |
| Movement type | Mechanical Automatic, self-winding | |
| Jewels | 38 jewels | |
| Frequency | 28’800 A/h, 4 Hz | |
| Power reserve | Approximately 60 hours | |
| Precision | -4/+6 seconds per day, measured in 5 positions | |
| Classic function | Hours, minutes and small second at 6 o‘clock | |
| Complications | none | |
| Special feature | Easy-Change System (strap change) | |
| Material | 316L Stainless Steel or Titanium Grade 5 | |
| Case diameter | 39mm | |
| Thickness | 13mm | |
| Weight | Stainless steel case 66g | Titanium case 52g | |
| Water-resistance | 100m | 10ATM (ISO 2281 standard) | |
| Crown | Screw-down crown, with time-setting mode | |
| Dial | Dual-layered dial with inner bezel and printed minute track | |
| Front glass | Double-domed sapphire crystal, with hardened anti-reflective coating on both sides | |
| Case-back glass | Single domed sapphire crystal, with inside-laser-print | |
| Hands and Indices | Indices and hands filed with Swiss Grade A Super-LumiNova | |
| Bands | Vulcanized rubber straps | Fabric straps Integrated 316L stainless steel or titanium grade 5 bracelet |
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| Buckle | Rubber and textile straps: Leica tang buckle with logo engraving, in stainless steel 316L or titanium grade 5 Metal bracelets: Butterfly Clasp with 2 pushers in stainless steel 316L or titanium grade 5 |
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| Warranty | 5-year International Warranty | |