Short Answer
No replica of the A. Lange & Söhne Zeitwerk Minute Repeater has a working decimal minute repeater. Watches sold under that name carry a quartz or automatic movement with a jumping numeral display. The lever or pusher on the case side trips a small striker, a buzzer, or nothing at all. The strike count does not match the time shown. The real watch arrived in 2015 in platinum and is hand-wound.
The Real Watch
Lange showed the Zeitwerk Minute Repeater in 2015. The case is platinum, 44.2 mm across. The dial has two apertures, one for the hour numeral and one for the minute numeral, with a time bridge in German silver over the top. A constant-force escapement releases energy once per minute and drives the discs. The numerals jump in one step.
The repeater is decimal. A standard repeater strikes hours, quarters, then minutes. The Zeitwerk strikes hours, ten-minute intervals, then single minutes. At 7:52 the gongs sound seven low tones, five double tones, and two high tones. The strike mechanism sits under the dial.
Lange states the strike train draws power from the mainspring through the constant-force mechanism. The crown must be in the winding position before the slide moves. The movement is calibre L043.5, and Lange lists a patent on the coupling between the escapement and the strike train.
What Replicas Do
- Movement: quartz, or a low-grade automatic with a module stacked on top.
- Numerals: discs or flags turned by a gear off the minute wheel. Some step. Some sweep.
- Chime: one hammer on a caseback gong, a piezo speaker, or a silent lever.
- Case: steel or brass with plating. Platinum is about 2.7 times the density of steel, so the real watch feels far heavier in the hand.
- Back: engraved plates and fake jewel settings. Screws that hold nothing.
How to Test a Copy
- Set the time to 7:52 or 3:47, a value with an odd minute.
- Push the slide or lever and count the strikes.
- Compare the count with the numerals. A decimal repeater gives hours, then tens of minutes, then single minutes.
- Listen for two pitches. One tone means a striker or an alarm, not a repeater.
- Watch the minute change. Two discs should move at the moment the minute rolls to 00.
- Weigh the watch and compare it with a steel watch of the same diameter.
Price and Terms
Real Zeitwerk Minute Repeater watches sell in the six-figure range at auction. Copies are listed from a few hundred dollars to a few thousand dollars. Sellers use terms such as "first copy", "1:1", "AAA", and "Swiss movement". None of these terms describe a decimal repeater. A decimal strike train needs a rack, a snail, and a set of levers. No known copy of this model carries one.
Before You Buy
Ask for a video with sound, filmed with the case in frame and the dial readable. Ask which movement is inside. Ask for the case diameter and the weight in grams. If the seller cannot answer those questions, the watch has no repeater. Lange does not supply movements to third parties, so any claim of a genuine Lange calibre inside a copy is false.