For most buyers comparing the Datograph Up/Down replica and the original, the practical pick is a high-grade replica if you want the look of the Lange chronograph and accept the tradeoffs. The original is the only choice if you need genuine in-house movement architecture, hand finishing, and provenance. Buy a replica only from a seller who shows real photos, states the movement type, and accepts returns. If any of those three are missing, walk away.
The Two Options
High-Grade Replica
A high-grade replica aims to copy the case shape, dial layout, and wrist presence of the Datograph Up/Down. The best versions use a hand-wound chronograph movement, sapphire crystal, and a case that measures close to 41mm. They do not match the original in finishing, service support, or long-term value. Expect visible differences in the big date mechanism, movement decoration, and caseback engravings.
lange datograph up/down copy watch
Original Datograph Up/Down
The original is a manual-wind flyback chronograph with a power reserve indicator and an outsize date. Its movement is finished to a standard that replicas cannot reproduce, including hand-engraved components and Glashütte ribbing. The original also comes with factory service, documented provenance, and resale value. Those factors explain the price gap and the ownership experience.
Replica Datograph Up/Down Price Guide: How to Buy the Best Deals
What to Look For in a Datograph Up/Down Replica
Start with the movement, then check the dial and case. A replica with a quartz movement or a decorated automatic is not in the same class as one with a hand-wound chronograph. Ask for a movement photo and a short video of the chronograph starting, stopping, and resetting. The big date should change cleanly, not stick or show misalignment. The power reserve indicator should move when you wind the watch, even if its accuracy is not perfect.
Lange Datograph Up/Down Copy Watch Guide
- Case proportions: target 41mm diameter and about 13mm thickness. A replica that is too thick or too wide will not sit like the original.
- Dial layout: big date at 12, chronograph minutes at 4, small seconds at 8, power reserve at 6. Check that the subdial positions match.
- Movement: hand-wound chronograph with a column wheel or a close visual copy. Avoid quartz and open-heart designs that do not exist on the original.
- Crystal: sapphire with anti-reflective coating. Mineral glass scratches and looks flat.
- Caseback: engraved screws, correct text, and a display back that shows a finished movement. A plain or sticker-covered back is a red flag.
- Weight and feel: the original in platinum or gold has heft. A steel replica will feel lighter, but it should not feel hollow or sharp.
Parameter Bands: Replica vs Original
Use these ranges as a checklist, not a guarantee. Replica specs vary by factory and batch.
- Case diameter: original 41.0mm; replica 40.5mm to 42.0mm.
- Case thickness: original about 13.1mm; replica 12.8mm to 14.5mm.
- Lug width: original 20mm; replica 20mm to 22mm.
- Movement: original in-house manual-wind flyback chronograph; replica hand-wound chronograph, often based on a Seagull ST19 or Lemania-style clone.
- Power reserve: original 60 hours; replica 36 to 48 hours.
- Frequency: original 18,000 vph; replica 21,600 vph on many ST19-based movements.
- Water resistance: original 30 meters; replica 30 to 50 meters, but not tested to the same standard.
- Finishing: original hand-finished bridges, blued screws, engraved balance cock; replica machine finishing and printed decoration.
Common Pitfalls
- 'Swiss made' claims on a Lange replica are false; Lange is a German brand.
- Gold plating that wears off at the lugs and caseback.
- A big date that is actually a single date wheel with a printed split, or two discs that do not align.
- Chronograph pushers that feel mushy or do not reset to zero.
- No service history or parts support. Many watchmakers will not touch replicas.
- Legal risk: import seizure and trademark issues. Buying a replica is not the same as buying a generic homage.
FAQ
Is a replica Datograph Up/Down legal to buy?
Laws vary. Selling counterfeit goods is illegal in many countries, and customs can seize imports. Check your local rules before you buy. A replica is not a licensed product.
Will a replica fool a watch expert?
No. The caseback finishing, movement architecture, weight, and dial details reveal the difference. A replica can look close in photos, but in hand the gap is clear.
Can I service a replica Datograph?
Some watchmakers will service generic hand-wound chronograph movements, but parts can be hard to source. Ask before you buy. The original has factory service and a documented parts network.
Which replica version should I choose?
Pick one with a hand-wound chronograph movement, sapphire crystal, real photos, and a return policy. Avoid quartz, decorated automatics, and sellers who use only stock images. If the price is far below other replicas, expect shortcuts.