Short answer: almost every watch sold as a fake Patek Philippe minute repeater cannot chime. It has a slide on the left side of the case and a quartz movement inside. If it makes a sound, the sound comes from a small speaker playing a recording. A real minute repeater is a mechanical machine with hammers and gongs. No battery, no electronics, and a price that starts in the hundreds of thousands.
That gap is easy to test, and you do not need tools. Here is what I look at.
What a genuine repeater does when you pull the slide
Two coiled gongs wrap around the movement. Two hammers sit above them. Pulling the slide winds a small spring, and when you let go, that spring releases through the gear train. The hammers then strike in sequence: hours on the low gong, quarters on both gongs, minutes on the high gong. So 3:47 sounds like three low strikes, two double strikes, then two high strikes. Patek uses an all-or-nothing mechanism, so the watch either completes the full sequence or it does not run at all. That design exists to protect the chime, and it is one reason a repeater movement is thick and costly to build.
The three kinds of repeater fakes
1. The dead slide
A skeletonized automatic with a fake lever on the case band. The lever moves, sometimes with a satisfying click, but it is connected to nothing. Open the back and you see a standard rotor and a plain movement. No gongs, no hammers.
2. The speaker
A quartz watch with a button or slide that triggers a chime sample through a piezo speaker. The tells show up the moment you listen. The sound is thin, it sounds the same every time, and the spacing never varies. The second hand also ticks once per second, and there is a battery inside.
3. The gong prop
Some builds glue two curved wire loops under the case back to imitate gongs. Real gongs are hardened steel, fixed at one end, and tuned. A prop wire bends under a fingernail and makes a dull thud instead of a ring.
Checks that take a minute
- Turn the watch over. Real hammers and gongs are visible, and the hammers move while the chime runs.
- Listen for a free ring. A repeater chime carries across a quiet room. A speaker sounds like a phone.
- Look for a battery or charging contacts.
- Count the strikes against the time on the dial. A real repeater matches to the minute.
- Test the all-or-nothing behavior. Start the slide, then hold it partway. A real mechanism either completes the sequence or stays locked.
- Weigh it in your hand. A repeater movement adds thickness and mass. A "platinum" case that feels light and hollow is not platinum.
- Ask for the serial number and the Extract from the Archives. A genuine repeater has a documented history, and Patek can confirm it.
Price is the loudest tell
Genuine Patek repeaters such as the 5078P or the 5231 world time minute repeater trade at auction in the high six figures and beyond. Replicas of that same look sell for a few hundred dollars. Nothing sits in between. If a watch has a working mechanical repeater inside and a Patek dial on top, the seller is holding something that either cost a fortune or was assembled around a non-Patek repeater movement. Both cases deserve hard questions about paperwork.
If you want the look, not the claim
There is nothing wrong with a watch that copies a repeater's dial, case shape, or slide. Plenty of people buy those and enjoy them. The trouble starts when a listing calls it a minute repeater and implies the chime works. Look for honest wording like "decorative slide" or "chime function," and treat "fully functional minute repeater" at a low price as a warning. Ask for a video of the watch chiming with the case back open. No seller of a real repeater will refuse that. Sellers of fakes will.
One last thing. Chime quality is the hardest part to copy and the easiest part to hear. Even the better Chinese repeating movements that exist today do not sound like a Patek, and none of them are fitted into a Patek-shaped case at replica prices. If the chime sounds like a ringtone, it is a ringtone.