Short answer
Replica tourbillon watches sold today fall into two groups. The first group uses a working Chinese tourbillon movement, and the cage turns once per minute. The second group has a dial cutout over a balance wheel, and nothing turns. Prices run from about $80 to $1,500. A tourbillon wristwatch from Patek Philippe, Breguet, or Audemars Piguet starts near $80,000.
What a tourbillon is
Abraham-Louis Breguet patented the tourbillon in 1801. The escapement and balance sit inside a small rotating cage. The cage makes one turn per minute. Breguet designed it for pocket watches, which sit upright in a pocket for most of the day. Gravity pulls on the balance in one direction in that position. Rotation averages the error out.
Replicas with a real tourbillon movement
Tianjin Seagull Watch Group builds hand-wound tourbillon movements. The ST8000 and the ST82 series are the common units. Hangzhou Watch also makes tourbillon movements. A loose movement costs $250 to $600. A complete watch with one of these movements sells for $400 to $1,500. The cage shows through a cutout at 6 o'clock on most models. Power reserve is 40 to 60 hours.
Case materials vary. Most are 316L stainless steel. Sapphire crystal on the front is standard above $400. Water resistance is rated at 30 m or 50 m on most listings, and that rating is not pressure-tested at this price.
Faux tourbillons
A large share of listings under $200 show a balance wheel through a dial opening. Nothing rotates. Sellers call this a "tourbillon style" or "open heart" design. Some add a small rotor or a decorative disc that spins for looks. Check before buying: request a video with the seconds hand and the cage in the same frame. On a real tourbillon the cage turns once per minute, so cage and seconds hand move at the same rate.
Accuracy
The chronometric case for a tourbillon in a wristwatch is weak. A wristwatch changes position through the day, so the error the cage averages out is small. Many modern tourbillons sell for craft and display, not rate. A $300 Chinese tourbillon runs at -10 to +20 seconds per day in owner tests. A $60 quartz watch beats that figure.
Legal status in the United States
Counterfeit goods are illegal to import and sell in the US under 18 U.S.C. § 2320. U.S. Customs and Border Protection seizes shipments at ports of entry. Personal-use purchases carry lower penalties than resale, but shipments can be destroyed. Trademark owners including Rolex, Patek Philippe, and Audemars Piguet file takedown requests against sellers.
What to check before buying
- Cage rotation: one turn per minute.
- Movement name, plus a photo of the caseback.
- Case size: a tourbillon cage needs depth, so most cases are 40 mm or larger.
- Service: Chinese tourbillon repair in the US is limited. Few watchmakers stock parts.
- Parts: a replacement movement costs close to the price of the watch.
- Dial cutout position: 6 o'clock is the common spot. A 12 o'clock cage costs more.