Technical specifications Leica ZM 1 and Leica ZM 2
| Diameter | 41 mm |
| Movement type | Leica caliber ZM 1 and ZM 2, hand-winding |
| Jewels | 26 jewels |
| Frequency | 28.800 A/h, 4 Hz |
| Power reserve | 60 hours |
| Classic function | Hours, minutes and small second display |
| Complications | 1) Push-crown; 2) mode indicator; 3) date display; 4) quick date setting; 5) power reserve indicator; |
| Leica ZM 2 only: 6) second time zone (GMT) function; 7) day/night indicator. | |
| Special features | Patented push-crown to enter the time setting mode, with seconds reset function and setting mode indication. |
| Power reserve indicator with 2 gradually closing blades. | |
| Quick date setting with pusher. | |
| Leica ZM 2 only: GMT inner ring with hour alignment and synchronised day and night display. | |
| Case | Stainless steel (316L) |
| Total height 14.5 mm, total length 48 mm | |
| Finishing with highly polished and satin surfaces, bevelled edges | |
| Water resistance | 50 m | 5 ATM (ISO 2281 standard) |
| Front glass | Domed sapphire crystal glass, anti-reflective coating on both sides, scratch-resistant coating, screw-mounted bezel |
| Case bottom glass | Flat sapphire crystal glass, anti-reflective coating on both sides, scratch-resistant coating, screw-mounted |
| Dial and hands | Dial in high-strength aluminum, milled from the full; with rhodium-plated and diamond cut indices, watch hands and small second decor ring |
| Strap | Calf leather, black with matching stitching, red brand stitching, and red backlining; |
| Genuine Alligator leather, matte black with matching stitching, red brand stitching, and red backlining. | |
| Buckle | Leica pin buckle, stainless steel, milled, polished and brushed finishing, with LEICA engraving |
Leica ZM 1 Monochrom and Leica ZM 2 Monochrom
| Diameter | 41 mm |
| Movement type | Leica caliber ZM 1 and ZM 2, hand-winding |
| Jewels | 26 jewels |
| Frequency | 28.800 A/h, 4 Hz |
| Power reserve | 60 hours |
| Classic function | Hours, minutes and small second display |
| Complications | 1) Push-crown; 2) mode indicator; 3) date display; 4) quick date setting; 5) power reserve indicator; |
| Leica ZM 2 Monochrom only: 6) second time zone (GMT) function; 7) day/night indicator. | |
| Special features | Patented push-crown to enter the time setting mode, with seconds reset function and setting mode indication. |
| Power reserve indicator with 2 gradually closing blades. | |
| Quick date setting with pusher. | |
| Leica ZM 2 Monochrom only: GMT inner ring with hour alignment and synchronised day and night display. | |
| Case | Stainless steel (316L) with black PVD coating |
| Total height 14.5 mm, total length 48 mm | |
| All satin surfaces with polished, bevelled edges | |
| Water resistance | 50 m | 5 ATM (ISO 2281 standard) |
| Front glass | Domed sapphire crystal glass, anti-reflective coating on both sides, scratch-resistant coating, screw-mounted bezel |
| Case bottom glass | Flat sapphire crystal glass, anti-reflective coating on both sides, scratch-resistant coating, screw-mounted |
| Dial and hands | Dial in high-strength aluminum, milled from the full; with black rhodium-plated and diamond-polished indices, watch hands and small second decor ring, with a black lacquered second hand |
| Strap | Black calf leather with Monochrom embossing, cut-edge construction with ton-sur-ton stitching, black latch stitching, and black Alcantara backlining |
| Buckle | Leica tang buckle, stainless steel (316L) with black PVD coating, polished and brushed finishing, with LEICA logo engraving |